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Synthesis of Comblike Poly(methyl methacrylate) by Atom Transfer Radical Polymerization with Poly(ethyl 2-bromoacrylate) as Macroinitiator 被引量:2
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作者 YanSHI ZhiFengFU +1 位作者 YuDongZHANG ShuKeJIAO 《Chinese Chemical Letters》 SCIE CAS CSCD 2003年第12期1289-1292,共4页
Comblike poly(methyl methacrylate) was synthesized by atom transfer radical polymerization of methyl methacrylate with poly(ethyl 2-bromoacrylate) as a macroinitiator, which was prepared by conventional free radical p... Comblike poly(methyl methacrylate) was synthesized by atom transfer radical polymerization of methyl methacrylate with poly(ethyl 2-bromoacrylate) as a macroinitiator, which was prepared by conventional free radical polymerization of ethyl 2-bromoacrylate. The obtained comblike polymers were characterized by GPC and 1H NMR. 展开更多
关键词 Comblike polymer atom transfer radical polymerization (atrp) MACROINITIATOR poly(methyl methacrylate) ethyl 2-bromoacrylate.
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Graft Copolymerization of N,N-Dimethylacrylamide to Cellulose in Homogeneous Media Using Atom Transfer Radical Polymerization for Hemocompatibility 被引量:2
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作者 Lifeng Yan Tao Wei 《Journal of Biomedical Science and Engineering》 2008年第1期37-43,共7页
In homogeneous media, N,N-Dimethylacrylamide (DMA) was grafted copolymerization to cellulose by a metal-catalyzed atom transfer radical polymerization (ATRP) process. First, cellulose was dissolved in DMAc/LiCl system... In homogeneous media, N,N-Dimethylacrylamide (DMA) was grafted copolymerization to cellulose by a metal-catalyzed atom transfer radical polymerization (ATRP) process. First, cellulose was dissolved in DMAc/LiCl system, and it reacted with 2-bromoisobutyloyl bromide (BiBBr) to produce macroinitiator (cell-BiB). Then DMA was polymerized to the cellulose backbone in a homogeneous DMSO solution in presence of the cell-BiB. Characterization with FT-IR, NMR, and GPC measurements showed that there obtained a graft copolymer with cellulose backbone and PDMA side chains (cell-PDMA) in well-defined structure. The proteins adsorption studies showed that the cellulose membranes modified by the as-prepared cell-PDMA copolymer owns good protein adsorption resistancet. 展开更多
关键词 cellulose atom transfer radical polymerization (atrp) HOMOGENEOUS GRAFT COPOLYMERIZATION hemocompatibility.
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Grafting of 2-Hydroxyethyl Methacrylate onto Silk by Atom Transfer Radical Polymerization 被引量:1
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作者 邢铁玲 肖勇 陈国强 《Journal of Donghua University(English Edition)》 EI CAS 2010年第4期491-495,共5页
Silk was grafted using 2-hydroxyethyl methacrylate(HEMA)by atom transfer radical polymerization(ATRP)method.The amino groups and hydroxyl groups on the side chains of the silk fibroin was reacted with 2-bromoisobutyry... Silk was grafted using 2-hydroxyethyl methacrylate(HEMA)by atom transfer radical polymerization(ATRP)method.The amino groups and hydroxyl groups on the side chains of the silk fibroin was reacted with 2-bromoisobutyryl bromide(BriB-Br)to obtain efficient macroinitiator for ATRP.And the macroinitiator was grafted with HEMA in water aqueous using CuBr/N,N,N',N",N"-pentamethyldiethylenetriamine(PMDETA)as catalyst system.The effects of monomer concentration,the proportion of CuBr and PMDETA,grafting temperature and time on the silk grafting were discussed,and the optimal grafting technology was obtained.FT-IR characterization of the grafted silk showed a peak corresponding to HEMA,which indicated that HEMA was grafted onto the surface of silk.ATRP method could be applied on the silk modification and this technique provided a new way for silk grafting. 展开更多
关键词 atom transfer radical polymerization(atrp SILK GRAFTING surface modification 2-hydroxyethyl methacrylate(HEMA)
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NEW INITIATION SYSTEMS FOR ATOM TRANSFER RADICAL POLYMERIZATION
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作者 丘坤元 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2004年第2期99-110,共12页
This review summarizes our achievements in designing new initiation systems for atom transfer radical polymerization (ATRP). First-order kinetics and extension experiments revealed the living nature of these reactions... This review summarizes our achievements in designing new initiation systems for atom transfer radical polymerization (ATRP). First-order kinetics and extension experiments revealed the living nature of these reactions. Tailor- made vinyl polymers with functional end groups were characterized by 1H-NMR and UV-vis spectroscopic analyses. Replacing traditional radical initiators AIBN and BPO, carbon-carbon bond compounds, 1,1,2,2-tetraphenyl-1,2-ethanediol, diethyl 2,3-dicyano-2,3-diphenylsuccinate and diethyl 2,3-dicyano-2,3-di(p-tolyl)succinate, were utilized in reverse ATRP to produce the initiating radical. Sulfur-sulfur bond iniferter, tetraethylthiuram disulfide (TD), in conjunction with CuBr/bpy or NiCl2/PPh3 complex could control the styrene polymerization via redox reaction. Pseudo-halogen transfer reaction was demonstrated to maintain the dormant-active species equilibrium in normal and reverse ATRP with Cu(S2CNEt2), Cu(S2CNEt2)Cl and Fe(S2CNEt2)3 as catalysts. The organic halide initiator and reduced transition metal compound that started the living polymerization were produced in situ from the components of TD/FeCl3/PPh3, TD/CuBr2/bpy and Fe(S2CNEt2)3/FeCl3/PPh3 systems. Accurate control of UV irradiation time favored the radical generation process in photo ATRP with the 2,2-dimethoxy-2-phenylacetophenone/Fe(S2CNEt2)3 initiation system. 展开更多
关键词 atom transfer radical polymerization (atrp) Initiation system Pseudo-halogen transfer In situ atrp Photo atrp
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NARROW-DISPERSED CROSSLINKED CORE-SHELL POLYMER MICROSPHERES PREPARED BY SURFACE-INITIATED ATOM TRANSFER RADICAL POLYMERIZATION
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作者 Yu-zengZhao Xin-linYang FengBai 黄文强 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2005年第3期293-299,共7页
Grafting of polystyrene with narrowly dispersed polymer microspheres through surface-initiated atom transferradical polymerization(ATRP)was investigated.Polydivinylbenzene(PDVB)microspheres were prepared by dispersion... Grafting of polystyrene with narrowly dispersed polymer microspheres through surface-initiated atom transferradical polymerization(ATRP)was investigated.Polydivinylbenzene(PDVB)microspheres were prepared by dispersionpolymerization with poly(N-vinyl pyrrolidone)(PVP)as stabilizer.The surfaces of PDVB microspheres werechloromethylated by chloromethyl methyl ether in the presence of zinc chloride as catalyst to form chloromethylbenzeneinitiating core sites for subsequent ATRP grafting of styrene using CuCl/bpy as catalytic system.Polystyrene was found to begrafted not only from the particle surfaces but also from within a thin shell layer,resulting in the formation of particles sizeincreased from 2.38-2.58 μm,which can further grow to 2.93 μm during secondary grafting polymerization of styrene.Thisdemonstrates that grafting polymerization proceeds through a typical ATRP procedure with living nature.All of the preparedmicrospheres have narrow particle size distribution with coefficient of variation around 10%. 展开更多
关键词 atom transfer radical polymerization(atrp) Core-shell polymers Grafting polymerization Surface-initiated polymerization.
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Water Repellent Finishing on Cotton Fabric via Atom Transfer Radical Polymerization
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作者 李时伟 邢铁玲 +1 位作者 李战雄 陈国强 《Journal of Donghua University(English Edition)》 EI CAS 2015年第1期7-12,共6页
In order to enhance the water repellence property of cotton fabric, cotton fabric was grafted using hexafluorobutyl methacrylate( HFMT) monomer via atom transfer radical polymerization( ATRP) method. Water repellent c... In order to enhance the water repellence property of cotton fabric, cotton fabric was grafted using hexafluorobutyl methacrylate( HFMT) monomer via atom transfer radical polymerization( ATRP) method. Water repellent cotton fabric was successfully prepared, and characterized by scanning electron microscopy( SEM),Fourier transform infrared spectroscopy( FTIR), and X-ray photoelectron spectroscopy( XPS). The SEM images of the HFMT-treated cotton displayed significant difference from the untreated one. FT-IR characterization of the HFMTtreated cotton indicated that HFMT was successfully grafted onto the surface of the cotton fabric. XPS analysis indicated that the fluorine element of the HFMT-treated cotton existing on the surface of the cotton fabric. The surface contact angle test as well as the water repellence rating test showed that the water repellence of the HFMTtreated cotton fabric was much better than that of the untreated cotton fabric. The surface contact angle of the HFMT-treated cotton fabric could reach( 132. 4 ± 2. 2) °,and the water repellence rating could achieve grade 3. The washing durability of the HFMT-treated fabric was also investigated. The surface contact angle of the HFMTtreated cotton fabric could reach( 121. 1 ± 2. 1) ° after 20 washing times. Furthermore, the whiteness, air permeability, breaking strength,and breaking elongation of the HFMT-treated cotton fabric decreased slightly compared with the untreated cotton fabric.Finally,cotton fabric with good water repellence property and excellent washing durability could be obtained with little effect on the intrinsic properties of cotton fabric. 展开更多
关键词 cotton fabric structure properties atom transfer radical polymerization(atrp) hexafluorobutyl methacrylate(HFMT) water repellence
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Atom Transfer Radical Polymerization of Methyl Methacrylate with α,α-Dichlorotoluene or α,α,α-Trichlorotoluene as Initiator
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作者 Zhi Feng FU Yan SHI +1 位作者 Ming Zhi HUANG Shu Ke JIAO(Department of Polymer Science. Beijing University of Chemical Technology. Beijing 100029) 《Chinese Chemical Letters》 SCIE CAS CSCD 1999年第7期611-614,共4页
The atom transfer radical polymerization (ATRP) of methyl methacrylate using α.α dichlorotoluene or α.α.α-trichlorotoluene as the initiator and CuCl/2.2'-bipyridine complex as the catalyst was investigated. ... The atom transfer radical polymerization (ATRP) of methyl methacrylate using α.α dichlorotoluene or α.α.α-trichlorotoluene as the initiator and CuCl/2.2'-bipyridine complex as the catalyst was investigated. α,α-Dichlorotoluene gave good control of molecular weight with high initiation efficiency and low polydispersity. While α.α.α-trichlorotoluene gave very slow polymerization rate. which could be improved by the addition of Cu (0) to the system. 展开更多
关键词 atom transfer radical polymerization (atrp) methyl methacrylate INITIATOR
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Atom Transfer Radical Polymerization of Acrylonitrile in Ionic Liquids
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作者 张玉梅 张红燕 +1 位作者 陈小军 王华平 《Journal of Donghua University(English Edition)》 EI CAS 2011年第1期57-61,共5页
The controllable molecular weight and polydispersity of polyacrylonitriles(PANs) were synthesized in ionic liquids(ILs) by atom transfer radical polymerization(ATRP) using ethyl-2 bromopropionate(EPN-Br) as initiator ... The controllable molecular weight and polydispersity of polyacrylonitriles(PANs) were synthesized in ionic liquids(ILs) by atom transfer radical polymerization(ATRP) using ethyl-2 bromopropionate(EPN-Br) as initiator and CuBr/pentamethyldiethylenetria-mine(PMDETA) as catalyst.The polydispersity index(PDI) in the ATRP of acrylonitriel(AN) in ILs is lower than 1.3.From the polymerization kinetics,plots of ln([M]0/[M]) with time show a linear dependence at the early stage of polymerization while the deviation is observed with the conversion rate increasing.The polymerization rate in ILs,especially in 1-butyl-3-methylimidazolium chloride([bmim]Cl),is higher than that in N,N-dimethylformamide(DMF).The polymerization rate increased and the average molecular weight decreased with temperature increasing.The polymerization rate,molecular weight and PDI varied with the variation of [AN]0:[EPN-Br]0:[CuBr]0:[PMDETA]0 ratio in the experimental range,the polymerization of AN in [bmim]Cl displayed living polymerization characteristics.Moreover,the catalyst and ILs are easily isolated from the polymer and reused. 展开更多
关键词 ACRYLONITRILE atom transfer radical polymerization(atrp) ionic liquids(ILs)
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Atom transfer radical polymerization of styrene using photoiniferter reagent as initiator
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作者 ZHANG Wei ZHU Xiu-lin ZHU Jian CHENG Zhen-ping 《Journal of Chemistry and Chemical Engineering》 2008年第6期22-28,37,共8页
Atom transfer radical polymerizations (ATRPs) of styrene (St) in bulk initiated by six iniferter reagents were carried out, respectively, in the present of copper (1) bromide (CuBr) and N, N,N',N",N"-pentam... Atom transfer radical polymerizations (ATRPs) of styrene (St) in bulk initiated by six iniferter reagents were carried out, respectively, in the present of copper (1) bromide (CuBr) and N, N,N',N",N"-pentamethyldiethylenetriamine (PMDETA) at 115℃. All the kinetic plots were first-order with respect to the monomer concentrations. At the same time, the corresponding molecular weights of the polymers increased linearly with the respective monomer conversions. Furthermore, the molecular weight distributions remained relatively narrow (Mw/Mn〈1.50) in all cases. Solution ATRP of St in dimethyl- formamide (DMF) initiated by benzyl N, N-diethyldithiocarba- mate (BDC) also showed the characteristics of living radical polymerization. The results of 1H NMR analysis and chain extension experiment confirmed that the well-defined polystyrene (PS) bearing photo-liable group has been obtained via ATRP of St using photoiniferter reagents as the initiators. 展开更多
关键词 atom transfer radical polymerization (atrp photoiniferter reagent STYRENE living polymerization N N-(diethylamino)dithiocarbamoyl
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原子转移自由基聚合(ATRP)在星形聚合物合成中的应用 被引量:20
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作者 唐新德 范星河 +1 位作者 陈小芳 周其凤 《化学进展》 SCIE CAS CSCD 北大核心 2005年第6期1089-1095,共7页
综述了近10年来采用原子转移自由基聚合(ATRP)法合成星形聚合物的研究进展。从聚合单体、引发剂、聚合方法和反应条件以及聚合物性质等方面讨论了原子转移自由基聚合在星形聚合物合成中的应用,并根据聚合方法和引发剂对各种反应进行了... 综述了近10年来采用原子转移自由基聚合(ATRP)法合成星形聚合物的研究进展。从聚合单体、引发剂、聚合方法和反应条件以及聚合物性质等方面讨论了原子转移自由基聚合在星形聚合物合成中的应用,并根据聚合方法和引发剂对各种反应进行了分类。对原子转移自由基聚合技术在合成功能性复杂星形聚合物中的应用进行了展望。 展开更多
关键词 原子转移自由基聚合(atrp) 星形聚合物 引发剂 先核后臂法 先臂后核法 串联atrp
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用ATRP法构筑核壳型梯度极性的多羟基多臂星状超支化聚合物及聚合物刷——双层聚合物刷的合成与表征 被引量:7
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作者 高超 钱卉 +3 位作者 王寿柏 孔浩 王蜀珺 颜德岳 《高分子学报》 SCIE CAS CSCD 北大核心 2004年第6期877-883,共7页
设计并通过原子转移自由基聚合方法 (ATRP)合成了核壳型多羟基多臂星状超支化聚合物刷 .以 2 溴异丁基酰溴封端的超支化聚 (3 乙基 3 羟甲基氧杂环丁烷 ) (HP Br)作为大分子引发剂 ,采用Cu(I)Br和N ,N ,N′ ,N′ ,N″ 五甲基二乙基三... 设计并通过原子转移自由基聚合方法 (ATRP)合成了核壳型多羟基多臂星状超支化聚合物刷 .以 2 溴异丁基酰溴封端的超支化聚 (3 乙基 3 羟甲基氧杂环丁烷 ) (HP Br)作为大分子引发剂 ,采用Cu(I)Br和N ,N ,N′ ,N′ ,N″ 五甲基二乙基三胺 (PMDETA)催化体系 ,在丁酮与丙醇的混和溶液中 ,通过甲基丙烯酸羟乙酯(HEMA)的ATRP溶液聚合 ,得到了一系列含有大量羟基的多臂星状超支化聚合物刷 (HP g PHEMA) ,并考察了其羟基的活性 ,发现羟基还可以与苯甲酰氯发生反应 .产物的结构和热性能用1 H NMR、FTIR、GPC、TGA、DSC等进行了表征和测试 . 展开更多
关键词 atrp 超支化聚合物 羟基 核壳型 乙基 羟甲基 催化体系 合成与表征 环丁烷 原子转移自由基聚合
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ATRP与点击化学相结合制备环状聚甲基丙烯酸甲酯 被引量:7
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作者 李娟 段明 +1 位作者 方申文 张烈辉 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2007年第6期1197-1199,共3页
An efficient route to macrocyclic polymers via “click” cyclization was presented.The α-bromine and ω-alkyne PMMA were prepared using the standard ATRP technique,initiated with propargyl 2-bromoisobutyrate,Cu(Ⅰ)Br... An efficient route to macrocyclic polymers via “click” cyclization was presented.The α-bromine and ω-alkyne PMMA were prepared using the standard ATRP technique,initiated with propargyl 2-bromoisobutyrate,Cu(Ⅰ)Br and N,N,N’,N″,N-pentamethyldiethylenetriamine(PMDETA).Azidation of the terminal bromine was followed in DMF with sodium azide,and α-azide,ω-alkyne PMMA precursor was obtained.Then the “click” cylcization of precursor between terminal azide and alkyne was carried out under the catalysis of CuBr/PMDETA,during the course of the reaction,a pseudo-high dilution technique was utilized to ensure the favored intramolecular cylcization.The nearly complete cylcization has been confirmed by a combination of IR,1H NMR and GPC analysis,and cyclo-PMMA with an Mn of 15000,PDI of 1.38 was obtained. 展开更多
关键词 原予转移自由基聚合(atrp) 点击化学 环状聚甲基丙烯酸甲酯制备
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原子转移自由基聚合(ATRP)在二氧化硅表面接枝中的应用 被引量:11
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作者 刘春华 范保林 刘榛 《高分子通报》 CAS CSCD 北大核心 2009年第4期64-70,共7页
ATRP方法是在二氧化硅(SiO2)表面接枝聚合物的一种有效方法。通过硅烷偶联剂把ATRP引发剂键接到SiO2表面,然后进行表面ATRP聚合,可以在SiO2表面接枝各种均聚物、嵌段共聚物、超支化聚合物。聚合可以在有机溶剂或水中进行。把ATRP方法同... ATRP方法是在二氧化硅(SiO2)表面接枝聚合物的一种有效方法。通过硅烷偶联剂把ATRP引发剂键接到SiO2表面,然后进行表面ATRP聚合,可以在SiO2表面接枝各种均聚物、嵌段共聚物、超支化聚合物。聚合可以在有机溶剂或水中进行。把ATRP方法同其它聚合方法如氮氧稳定自由基聚合或开环聚合相结合,可以在SiO2表面接枝复杂结构的聚合物如V型嵌段共聚物、梳型共聚物等。SiO2表面ATRP聚合可以通过外加引发剂或外加二价铜来实现聚合可控。 展开更多
关键词 原子转移自由基聚合(atrp) 二氧化硅 表面接枝
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ATRP法合成弹性蛋白接枝共聚物及其性能研究 被引量:4
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作者 王晓丽 甘甜甜 +2 位作者 张敏 侯信 姚康德 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2007年第4期789-793,共5页
弹性蛋白经α-溴异丁酰溴化制备了大分子ATRP引发剂溴化弹性蛋白(E-Br),再以E-Br作为引发剂,在CuCl/2,2-联吡啶催化体系下,用原子转移自由基聚合方法合成了弹性蛋白-g-聚甲基丙烯酸-β-羟乙酯接枝聚合物.用红外光谱(FTIR)、X射线光电子... 弹性蛋白经α-溴异丁酰溴化制备了大分子ATRP引发剂溴化弹性蛋白(E-Br),再以E-Br作为引发剂,在CuCl/2,2-联吡啶催化体系下,用原子转移自由基聚合方法合成了弹性蛋白-g-聚甲基丙烯酸-β-羟乙酯接枝聚合物.用红外光谱(FTIR)、X射线光电子能谱(XPS)、热重分析(TGA)、扫描电镜(SEM)、离子色谱和动态接触角对接枝聚合物进行了表征.结果表明,PHEMA键接到了弹性蛋白表面;SEM显示接枝改性后弹性蛋白的表面比未改性前光滑,但改性后样品的热性能均比未改性样品的低,起始热分解温度由改性前的307℃变为265℃;动态接触角实验结果表明,接枝改性后的样品具有良好的亲水性,反应72h后,其前进角由接枝前的130.45°下降到29.80°. 展开更多
关键词 原子转移自由基聚合(atrp) 弹性蛋白 甲基丙烯酸-Β-羟乙酯 接枝
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ATRP与点击化学结合制备树状星型聚合物 被引量:5
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作者 段明 张烈辉 李娟 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2008年第10期2118-2120,共3页
A new approach to the synthesis of dendrimer-like star polymer,[(PMMA)2PSt]4,was presented via the combination of atom transfer radical polymerization(ATRP) and ckick chemistry.Firstly four-arm bromine-terminated poly... A new approach to the synthesis of dendrimer-like star polymer,[(PMMA)2PSt]4,was presented via the combination of atom transfer radical polymerization(ATRP) and ckick chemistry.Firstly four-arm bromine-terminated polystyrene(PSt-Br)4 was obtained from ATRP of styrene using pentaerythritol tetra(2-bromoisobutyrate) as an initiator,and the(PSt-Br)4 was efficiently converted to the azido-terminated polymers[(PSt-N3)4] through the bromine substitution reaction with sodium azide.Furthermore,the(PSt-N3)4 reacted with propargyl 2,2-bis[2-(bromomethyl)propionato]propionyrate via a click reaction,1,3-dipolar cycloaddition reaction,and the polymer[(PSt-Br2)4] containing eight end-bromine was obtained.The(PSt-Br2)4 could further serve as a macroinitiator for the ATRP of methyl methacrylate(MMA).Accordingly,the dendrimer-like star polymer,[(PMMA)2PSt]4 was successfully prepared.The structure of [(PMMA)2PSt]4 was characterized via IR,1H NMR,GPC and DSC. 展开更多
关键词 原子转移自由基聚合(atrp) 点击化学 树状星型聚合物
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基于ATRP技术的多嵌段共聚物研究进展 被引量:7
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作者 唐新德 范星河 +1 位作者 陈小芳 周其凤 《高分子通报》 CAS CSCD 2006年第6期36-43,共8页
原子转移自由基聚合(ATRP)技术是合成结构规整性聚合物的有效途径。综述了近十年来采用ATRP技术合成多嵌段共聚物的研究进展。从引发剂、共聚单体和反应条件等方面讨论了ABA型、ABC型和ABCBA型等类型多嵌段共聚物的合成、性质与潜在应... 原子转移自由基聚合(ATRP)技术是合成结构规整性聚合物的有效途径。综述了近十年来采用ATRP技术合成多嵌段共聚物的研究进展。从引发剂、共聚单体和反应条件等方面讨论了ABA型、ABC型和ABCBA型等类型多嵌段共聚物的合成、性质与潜在应用。对原子转移自由基聚合技术在合成功能性多嵌段共聚物中的应用前景进行了展望。 展开更多
关键词 原子转移自由基聚合(atrp) 多嵌段共聚物 ABA型三嵌段共聚物 ABC型三嵌段 共聚物 ABCBA型五嵌段共聚物
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利用ATRP法合成聚丙烯酰胺基偶氮苯 被引量:3
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作者 李光华 何丽秋 +3 位作者 高振胜 杨苹苹 王广东 聂良瑞 《广西大学学报(自然科学版)》 CAS CSCD 北大核心 2012年第3期450-454,共5页
以丙烯酰胺基偶氮苯为单体,2-氯丙酸甲酯(MCP)为引发剂,CuCl/Me6TREN(三-[2-(二甲基氨基)乙基]胺)为催化体系,二甲基亚砜(DMSO)或N,N-二甲基甲酰胺(DMF)为溶剂,利用原子转移自由基聚合(ATRP)法合成了聚丙烯酰胺基偶氮苯(PAAAB),考察其... 以丙烯酰胺基偶氮苯为单体,2-氯丙酸甲酯(MCP)为引发剂,CuCl/Me6TREN(三-[2-(二甲基氨基)乙基]胺)为催化体系,二甲基亚砜(DMSO)或N,N-二甲基甲酰胺(DMF)为溶剂,利用原子转移自由基聚合(ATRP)法合成了聚丙烯酰胺基偶氮苯(PAAAB),考察其聚合反应动力学以及溶剂、温度对聚合反应的影响。结果表明:以DMSO为溶剂,单体转化率小于24%,聚合反应动力学曲线呈良好的线性关系,且Mw/Mn<1.5,其聚合速率比以DMF为溶剂的快,且聚合物的分子量高。90℃下聚合物的分子量比130℃的大。 展开更多
关键词 丙烯酰胺基偶氮苯 三-[2-(二甲基氨基)乙基]胺 原子转移自由基聚合 动力学
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原子转移自由基聚合(ATRP)制备高密度端羟基聚氧乙烯梳状嵌段聚合物 被引量:9
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作者 李晓林 计剑 沈家骢 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2005年第2期388-390,共3页
A novel hydroxy-capped comb-like block polymer, poly[poly(ethylene glycol)](HCPEG), was prepared via atom transfer radical polymerization(ATRP) of α-methylacryloyl-ω-hydroxyl-poly(ethylene glycol). The polymerizatio... A novel hydroxy-capped comb-like block polymer, poly[poly(ethylene glycol)](HCPEG), was prepared via atom transfer radical polymerization(ATRP) of α-methylacryloyl-ω-hydroxyl-poly(ethylene glycol). The polymerization kinetics of the PHPEGMA was studied by gel permeation chromatography and 1H NMR. The semilogarithmic plot of monomer conversion vs. reaction time increases linearly before the conversion is up to more than 70% and the number-average molecular weights(M_n) by GPC increased linearly with increase of the monomer conversion up to 100%, while the polydispersity index remained fairly narrow with M_w/M_n<1.2. 展开更多
关键词 原子转移自由基聚合 α-甲基丙烯酰基-α-羟基-低聚聚乙二醇 梳状聚合物
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原子转移自由基聚合(ATRP)制备聚合物刷的研究进展 被引量:2
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作者 徐群娜 马建中 鲍艳 《材料导报》 EI CAS CSCD 北大核心 2010年第11期85-88,共4页
从聚合物刷的概念和ATRP技术的提出入手,概述了聚合物刷的基本理论、合成方法及应用,并着重介绍了ATRP法制备聚合物刷方面的研究进展。
关键词 聚合物刷 原子转移自由基聚合(atrp) 活性聚合
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基于POSS的ATRP引发剂的合成及其PMMA杂化材料制备 被引量:3
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作者 赵春宝 金鸿 杨绪杰 《化工新型材料》 CAS CSCD 北大核心 2011年第3期47-49,57,共4页
通过苯基三氯硅烷的水解、缩合合成了八苯基倍半硅氧烷(OPS),再经硝化、还原制备了八氨基苯基倍半硅氧烷(OAPS),在此基础上进一步合成了ATRP引发剂BOAPS,并运用FT-IR、NMR对产物的结构进行了表征。采用ATRP方法制备了PMMA/BOAPS杂化聚合... 通过苯基三氯硅烷的水解、缩合合成了八苯基倍半硅氧烷(OPS),再经硝化、还原制备了八氨基苯基倍半硅氧烷(OAPS),在此基础上进一步合成了ATRP引发剂BOAPS,并运用FT-IR、NMR对产物的结构进行了表征。采用ATRP方法制备了PMMA/BOAPS杂化聚合物,运用GPC、DSC及TGA手段对杂化材料的结构与热性能进行了分析。结果表明,PMMA杂化物的数均分子量(Mn)为58000,分子量多分散系数为1.12。与分子量相近的线性PMMA相比,PMMA/BOAPS杂化材料的玻璃化转变温度(Tg)提高了约16℃,10%失重时热分解温度升高约64℃。 展开更多
关键词 多面体低聚倍半硅氧烷 原子转移自由基聚合 聚甲基丙烯酸甲酯 杂化材料
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