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Nonionic Polymerizable Emulsifier in High-Solids-Content Acrylate Emulsion Polymerization 被引量:3
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作者 鲁德平 管蓉 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第5期924-930,共7页
Stable high-solids-content acrylate emulsion were obtained with a nonionic polymerizable emulsifier allyloxy nonylphenoxy poly (ethyleneoxy) (10) ether (ANPEO10), and a conventional emulsifier OP-10 as a referen... Stable high-solids-content acrylate emulsion were obtained with a nonionic polymerizable emulsifier allyloxy nonylphenoxy poly (ethyleneoxy) (10) ether (ANPEO10), and a conventional emulsifier OP-10 as a reference sample. 1H NMR proves that the polymerizable emulsifier ANPEO10 has been incorporated into the resulted acrylate polymers. TEM demonstrates that there are some differences in the particle morphologies. AFM proves that the polymerizable emulsifier ANPEO10 migrating to the surface of the emulsion film was much less than the conventional emulsifier OP-10. The polymerizable emulsifier ANPEO10 can enhance the adhesion with glass plate compared to the conventional emulsifier. Furthermore, with increasing amount of emulsifier, the surface free energy of the films first decreased and then increased, and the adhesion with glass plate is initially enhanced and then attenuated. The water-resistance and solvent-resistance of the films prepared by the polymerizable emulsifier ANPEO10 are superior to those prepared by the conventional emulsifier OP-10. 展开更多
关键词 polymerizable emulsifier emulsion polymerization nonionic high-solids-content acrylate
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STABILITY OF EMULSIFIER-FREE EMULSION COPOLYMERIZATION OF METHYL METHACRYLATE/BUTYL ACRYLATE/SODIUM MONO(ETHYL POLYOXYETHYLENE)MALEATE
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作者 潘祖仁 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 1999年第6期571-577,共7页
A series of new water-soluble bifunctional comonomers having both carboxyl and alkyl polyoxyethylene groups, such as sodium mono(ethyl polyoxyethylene) maleate (ZE series) with various molecular weights of polyoxyethy... A series of new water-soluble bifunctional comonomers having both carboxyl and alkyl polyoxyethylene groups, such as sodium mono(ethyl polyoxyethylene) maleate (ZE series) with various molecular weights of polyoxyethylene ethyl ether, were synthesized and characterized. The effects of the structural factor, the amount and feeding mode of the comonomers, the initiator concentration and polymerization temperature on the stability of emulsifier-free emulsion copolymerization of methyl methacrylate (MMA) and butyl acrylate (BA) in the presence of a small amount of ZE with potassium persulfate as initiator were investigated. Stable, almost monodispersed MMA/BA/ZE emulsifier-free latex particles were prepared. 展开更多
关键词 emulsifier-free emulsion polymerization STABILITY monodispersed particle
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Synthesis and Properties of the Polymeric Surfactant Based on Maleamic Acid and Styrene
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作者 杨永清 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2011年第1期79-82,共4页
An alternative polymeric surfactant P(M3/St) was synthesized by solution polymerization of maleamic acid as hydrophilic monomer and styrene as hydrophobic monomer. Some factors that affect the yield and properties o... An alternative polymeric surfactant P(M3/St) was synthesized by solution polymerization of maleamic acid as hydrophilic monomer and styrene as hydrophobic monomer. Some factors that affect the yield and properties of the polymeric surfactant were investigated systemically. The surface tension of the polymeric surfactant reaches 37-38 mN/m. It is proved that the polymeric surfactant shows very good surface activity and emulsifying ability. The TG analysis shows that the temperature of the thermal degradation can reach 314.4 ℃. It will be used as a new type of polymeric surfactant. 展开更多
关键词 maleamic acid polymeric surfactant surface activity emulsifying ability thermal resistance
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Microwave Assisted Preparation of Monodisperse Polymeric Microspheres and Its Morphologies and Kinetics
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作者 严微 HU Xiaoxi +3 位作者 ZHANG Gangshen DENG Min YI Changfeng 徐祖顺 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第6期1100-1104,共5页
The emulsifier-free emulsion polymerization of N-hydroxymethyl acrylamide (NMA), methyl methacrylate (MMA) and styrene (St) was successfully carried out under microwave irradiation, and monodisperse polymeric mi... The emulsifier-free emulsion polymerization of N-hydroxymethyl acrylamide (NMA), methyl methacrylate (MMA) and styrene (St) was successfully carried out under microwave irradiation, and monodisperse polymeric microspheres were prepared. The experimental results show that the emulsifier-free emulsion polymerization under microwave irradiation has more rapid reaction rate, higher conversion and shorter induction time than the copolymerization with conventional heating. The apparent activation energies are 61.04 and 83.75 kJ/mol, respectively; the microspheres have spherical morphology, and the microspheres prepared by emulsifier-free emulsion polymerization under microwave irradiation are smaller, more uniform than those obtained with conventional heating. 展开更多
关键词 microwave irradiation emulsifier-FREE EMULSION polymerization MONODISPERSE MICROSPHERE
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STUDY ON THE FORMATION MECHANISM OF MONODISPERSE PARTICLES IN THE EMULSIFIER-FREE EMULSION POLYMEAIZATION OF METHYL METHACRYLATE AND BUTYL ACRYLATE
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作者 张茂根 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2003年第1期77-85,共9页
The formation mechanism of monodisperse polymer latex particles in the emulsifier-free emulsion polymerizationof methyl methacrylate and butyl acrylate with potassium persulfate as initiator was investigated. A multi-... The formation mechanism of monodisperse polymer latex particles in the emulsifier-free emulsion polymerizationof methyl methacrylate and butyl acrylate with potassium persulfate as initiator was investigated. A multi-step formationmechanism for the monodisperse polymer particles was proposed. The nucleation mechanism is considered to be thecoagulation of the precursor particles by homogeneous nucleation when the primary particles reach a critical size with highsurface charge density and sufficient stability. It had been proved by a special experiment that the early latex particles formedby the coagulation were stable. The primary particles grow by absorbing monomers and radicals in the polymerization systemand then become colloidally unstable again due to the understandable decrease of particle surface charge density, which leadsto the aggregation of the growing particles and the formation of larger latex pedicles therefrom. Aner the nucleation period,the preferential aggregation of the smaller particles in the propagation process leads to the change of the particles towards auniform size and narrower particle size distribution. The coexistence and competition of homogeneous nucleation,coagulation, propagation and aggregation result in the increase of the polydispersity index (U = D_(43)/D_(10)) in the first Stage,then its decrease in the later stage because of the competition of propagation and aggregation, and the gradual formation ofthe monodisperse particles. 展开更多
关键词 emulsifier-free emulsion polymerization LATEX Monodisperse particle Particle formation mechanism ACRYLATE
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聚合物水泥防水涂料用苯丙乳液的研制及其各因素影响研究
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作者 杨竟 卿宁 胡杨 《广东化工》 CAS 2024年第3期42-45,共4页
通过预乳化半连续种子乳液聚合法自制了JS防水涂料专用苯丙乳液,并由此制备了聚合物水泥防水涂料。研究了乳化剂用量及其分配对苯丙乳液粒径及其吸水率的影响,同时通过尝试不同的方法降低乳液残留单体减少VOC排放。在自制苯丙乳液的基... 通过预乳化半连续种子乳液聚合法自制了JS防水涂料专用苯丙乳液,并由此制备了聚合物水泥防水涂料。研究了乳化剂用量及其分配对苯丙乳液粒径及其吸水率的影响,同时通过尝试不同的方法降低乳液残留单体减少VOC排放。在自制苯丙乳液的基础上探究不同液粉比对聚合物水泥防水涂料拉伸性能的影响,通过添加一些不同的助剂来提升聚合物水泥防水涂料的综合性能。 展开更多
关键词 聚合物水泥防水涂料 预乳化半连续种子乳液聚合 VOC排放 拉伸性能 液粉比
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聚丙烯酸酯无皂乳液的构建及对水性油墨性能的影响
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作者 郑咏佳 费贵强 +3 位作者 段仪豪 郑熙熙 桑起龙 徐洪杰 《精细化工》 EI CAS CSCD 北大核心 2024年第4期920-928,共9页
以丙烯酸(AA)、丙烯酸丁酯(BA)、甲基丙烯酸甲酯(MMA)、丙烯酸羟丙酯(HPA)、2-甲基丙烯酸羟乙酯(HEMA)、乙烯基三异丙氧基硅烷(A-173)为单体,过氧化苯甲酰(BPO)、过氧化苯甲酸叔丁酯(TBPB)为引发剂,合成了丙烯酸酯大分子乳化剂,再通过... 以丙烯酸(AA)、丙烯酸丁酯(BA)、甲基丙烯酸甲酯(MMA)、丙烯酸羟丙酯(HPA)、2-甲基丙烯酸羟乙酯(HEMA)、乙烯基三异丙氧基硅烷(A-173)为单体,过氧化苯甲酰(BPO)、过氧化苯甲酸叔丁酯(TBPB)为引发剂,合成了丙烯酸酯大分子乳化剂,再通过无皂乳液聚合法合成了聚丙烯酸酯无皂乳液,将其与颜料等混合制备了水性油墨。采用FTIR、DSC、TEM、SEM对聚合物的结构及性能进行了表征,考察了不同BPO用量对丙烯酸酯大分子乳化剂的影响,不同AA添加量对乳液及水性油墨的影响。结果表明:当BPO用量为单体总质量的4.18%时,丙烯酸酯大分子乳化剂具有最低表面张力40.43mN/m;当AA添加量为单体总质量的1.00%时,聚丙烯酸酯无皂乳液具有合格的储存稳定性,乳胶膜拉伸强度可达5.00 MPa,断裂伸长率为200%,玻璃化转变温度为18.5℃,所制备的水性油墨黏度为23.79mPa·s,附着牢度90.75%,耐摩擦性4.5级。 展开更多
关键词 大分子乳化剂 乳液聚合 丙烯酸酯 无皂乳液 水性油墨
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聚异丁烯马来酸酐类高分子乳化剂的酸值测定
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作者 叶辉 马平 +3 位作者 谭本岭 郝会娟 崔刚 范昊霖 《精细石油化工》 CAS 2024年第1期38-41,共4页
以GB/T 7304—2014测定结果为理论值,考察了甲醇-甲醇钠法、吡啶溶剂法和乙醇-甲苯溶剂法对聚异丁烯马来酸酐类高分子乳化剂(PIBSA-PME)酸值的影响。结果表明:3种方法测定结果与理论值较为接近,精确度为101.35%~103.40%,相对误差均小于... 以GB/T 7304—2014测定结果为理论值,考察了甲醇-甲醇钠法、吡啶溶剂法和乙醇-甲苯溶剂法对聚异丁烯马来酸酐类高分子乳化剂(PIBSA-PME)酸值的影响。结果表明:3种方法测定结果与理论值较为接近,精确度为101.35%~103.40%,相对误差均小于5%,在乙醇-甲苯法中选定混合溶剂V(甲苯)∶V(乙醇)为4∶6,混合溶剂用量100 mL时,PIBSA-PME的测定结果和GB/T 7304—2014一致,数据重现性好。 展开更多
关键词 聚异丁烯马来酸酐类高分子乳化剂 酸值 测定方法
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乳化性能对乳液聚合体系稳定性及反应过程的影响
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作者 赵笑男 孙烨 王鑫 《石油化工应用》 CAS 2024年第9期111-116,共6页
反相乳液聚合是合成聚丙烯酰胺一种重要的聚合方式,乳液体系由聚合单体水溶液、溶剂及乳化剂组成,体系的乳化性能对乳液的稳定性、聚合反应过程及产品粒径分布具有重要影响。本文通过研究体系中亲水乳化剂含量、总乳化剂含量、亲油/亲... 反相乳液聚合是合成聚丙烯酰胺一种重要的聚合方式,乳液体系由聚合单体水溶液、溶剂及乳化剂组成,体系的乳化性能对乳液的稳定性、聚合反应过程及产品粒径分布具有重要影响。本文通过研究体系中亲水乳化剂含量、总乳化剂含量、亲油/亲水乳化剂配比对乳液稳定性及聚合过程的影响,精确计算每组实验乳液体系的乳化性能,确定了水油比例为1.5时,粒径200~450 nm产品乳化体系稳定、反应过程较好的乳化性能区间,为后续同类反应研究提供参考。 展开更多
关键词 乳化性能 丙烯酰胺 乳液聚合 乳液稳定性
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Preparation of multihollow P(St-MAA) particles by sequence soap-free/soap emulsion polymerization and followed by stepwise alkali/acid posttreatment 被引量:3
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作者 Rong Long Li Cheng You Kan +2 位作者 Ze Ping Li Yi Du Yan Nan Cui 《Chinese Chemical Letters》 SCIE CAS CSCD 2007年第6期741-743,共3页
The effects of ionic emulsifier, sodium dodecylbenzene sulfate (SDBS), on the formation of the multihollow structures in sub-micron sized polymer particles produced by alkali/acid posttreatment were investigated. The ... The effects of ionic emulsifier, sodium dodecylbenzene sulfate (SDBS), on the formation of the multihollow structures in sub-micron sized polymer particles produced by alkali/acid posttreatment were investigated. The original latex particles with narrow size distribution were synthesized by a new sequence emulsifier-free/emulsifier emulsion copolymerization of styrene (St) and methacrylic acid (MAA). Results indicated that the pore size decreased and the pore number increased with the increase of SDBS amount, and the morphology of the posttreated latex particles was also significantly influenced by the introducing time of SDBS in the preparation of the original latex particles, and a suitable introducing time was 3 h of polymerization. (c) 2007 Cheng You Kan. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved. 展开更多
关键词 multihollow latex particles morphology emulsion polymerization emulsifier
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Preparation and Application of the Hydrophilic Amino-Silicone Softener by Emulsion Polymerization 被引量:1
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作者 Ruza Artikboeva Yue Wu +2 位作者 Mingxing Yang Chen Jie Quan Heng 《Advances in Chemical Engineering and Science》 2020年第1期1-23,共23页
The amino poly-siloxane was modified with self-made polyether silicones by the crafts of emulsion polymerization. We studied the emulsifier, the dosage of emulsifier initiator, polyether/silane coupling agent, pH valu... The amino poly-siloxane was modified with self-made polyether silicones by the crafts of emulsion polymerization. We studied the emulsifier, the dosage of emulsifier initiator, polyether/silane coupling agent, pH value. There are some results of the research indicated in the following. First, there are many factors for the hydrophilic amino-silicone softener both on the polymerization process and the performance, such as the proportion and amount of emulsifier, initiator dosage, the mass ratio of the polyether and hydrogen silicone oil, the choice of silicone coupling agent, and the ratio and dosage of polyether silicones silane coupling agent. Second, the amount of hydrogen of the hydrogen silicones and the choice of catalyst are the key points on the synthesis of polyether silicones. The amount of hydrogen should be low and the catalyst must be economical and efficient and its introduction should be small and times, other more the holding time is not too long. The next one is that, in the process of hydrolysis of silane coupling agent, we need some acid to adjust pH value, or they will be broken down. The most important one but not the last is that the epoxy group can improve the products low-temperature supple and the persistence of the finishing fabric, furthermore it can reduce yellowing and has a good stability of the inorganic salt, however, it will be destroyed if the reaction temperature for epoxy is too high. What’s more, it is very economical and environmental that the process of emulsion is simple and with less emulsifier. 展开更多
关键词 Amino-Silicone SOFTENER POLYETHER emulsifier HYDROPHILIC SOFTNESS and SMOOTHNESS Emulsion polymerization
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STUDY ON THE POLYMERIZATION KINETICS AND STABILITY OF P(UA)/MMA MICROEMULSION
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作者 Hong-tao Zhang Tian-bin Ren Zhao-hui Yin 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2001年第1期45-51,共7页
Urethane acrylate anionomer (APUA) as a kind of new type polymerizable emulsifier was synthesized using 2,4-toluene diisocyanate (TDI), polypropylene glycol (PPG), 2-hydroxyethyl methacrylate (HEMA) and dimethylolprop... Urethane acrylate anionomer (APUA) as a kind of new type polymerizable emulsifier was synthesized using 2,4-toluene diisocyanate (TDI), polypropylene glycol (PPG), 2-hydroxyethyl methacrylate (HEMA) and dimethylolpropionic acid (DMPA). The critical micelle concentration (CMC) of APUA was measured by the methods of conductance and surface tension. The comparative studies between polymerizable emulsifier AUPA and conventional emulsifier sodium dodecyl sulfate (SDS) were carried out in the emulsion polymerization of methyl methacrylate (MMA). Polymerization kinetics, stability, size and morphology of the latex particles were investigated. It was found that in APUA both water soluble initiator potassium persulfate (KPS) and oil soluble initiator 2,2'-azobisisobutyronitrile (AlBN) can start the reaction of MMA, and the polymerization rate and yield were very high. On using AlBN as an initiator, the conversion-time behavior of MMA with APUA as emulsifier was different to that of SDS as emulsifier, signifying a different nucleation mechanism of the polymer latex particle. The average size of the two kinds of particles is about 50 nm. The particle size decreases with increasing emulsifier concentration. On using KPS as the initiator, APUA as emulsifier, cross-linking hydrogel of PMMA would be formed, but SDS was used as emulsifier and the hydrogel of PMMA was not present. 展开更多
关键词 polymerizable emulsifiers urethane acrylate polymerization kinetics STABILITY nucleation mechanism
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不同乳化剂种类对硬脂酸十二烷基酯相变微胶囊的性能影响
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作者 汪海平 李欣膂 +3 位作者 刘芸 鲁珍 余凡 胡思前 《化工新型材料》 CAS CSCD 北大核心 2023年第5期185-189,共5页
分别采用十二烷基苯磺酸钠/聚乙烯醇(SDBS/PVA)、吐温20和辛基苯酚聚氧乙烯醚(OP-10)3种不同的乳化剂,通过原位聚合法制备了以硬脂酸十二烷基酯(DS)相变材料为核、三聚氰胺-尿素-甲醛树脂(MUF)为壳的相变微胶囊。采用扫描电子显微镜(SEM... 分别采用十二烷基苯磺酸钠/聚乙烯醇(SDBS/PVA)、吐温20和辛基苯酚聚氧乙烯醚(OP-10)3种不同的乳化剂,通过原位聚合法制备了以硬脂酸十二烷基酯(DS)相变材料为核、三聚氰胺-尿素-甲醛树脂(MUF)为壳的相变微胶囊。采用扫描电子显微镜(SEM)、傅里叶红外光谱仪(FT-IR)、差式扫描量热仪(DSC)和热重分析仪(TG)对微胶囊的表面形貌、化学结构、相变性能和热稳定性进行了表征。结果表明,所得相变微胶囊呈圆球形,表面较为粗糙;与SDBS/PVA复配乳化剂相比,以非离子型乳化剂吐温20和OP-10制备的相变微胶囊粒径较小;当采用吐温20为乳化剂时,所得微胶囊具有良好的储热能力,熔融焓高达139.2J/g,囊芯含量为69.5%;由于DS本身的蒸发温度较高加上进一步的封装,所制备的相变微胶囊表现出良好的热稳定性,其耐热温度可达250℃。 展开更多
关键词 硬脂酸酯 相变微胶囊 乳化剂 原位聚合 织物
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聚氧乙烯醚型高分子阳离子沥青乳化剂的合成与性能 被引量:2
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作者 卢晓 唐新德 +2 位作者 陈晓东 张翠珍 李学凡 《建筑材料学报》 EI CAS CSCD 北大核心 2023年第3期283-288,共6页
以过氧化氢异丙苯为引发剂,3-巯基丙酸为链转移剂,采用自由基聚合制备了一种聚氧乙烯醚型高分子阳离子沥青乳化剂(PEAE),探讨了乙二醇单乙烯基聚乙二醇醚(EPEG)用量、单体摩尔比、酸胺摩尔比及引发剂用量对PEAE低温延度的影响,并采用傅... 以过氧化氢异丙苯为引发剂,3-巯基丙酸为链转移剂,采用自由基聚合制备了一种聚氧乙烯醚型高分子阳离子沥青乳化剂(PEAE),探讨了乙二醇单乙烯基聚乙二醇醚(EPEG)用量、单体摩尔比、酸胺摩尔比及引发剂用量对PEAE低温延度的影响,并采用傅里叶变换红外光谱对PEAE的分子结构进行表征,测试了其表面活性及乳化性能.结果表明,PEAE各项指标均符合规范要求,其乳化能力、低温性能及5 d常温储存稳定性优良,属于慢裂型阳离子沥青乳化剂,可有效改善乳化沥青的低温性能,在稀浆封层和微表处等施工中有着良好的应用前景. 展开更多
关键词 高分子阳离子沥青乳化剂 乳化沥青 低温性能 储存稳定性
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Pickering乳液聚合技术在合成功能材料方面的研究进展 被引量:1
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作者 李秋平 丁永红 +1 位作者 欧阳红霞 李亮荣 《安徽化工》 CAS 2023年第3期1-4,7,共5页
Pickering乳液聚合技术是在微纳米固体颗粒稳定的乳液基础上进行聚合的一种新型反应技术,在合成功能复合材料的应用方面获得了特别的关注。介绍了Pickering乳液的稳定机理和基于Pickering乳液聚合技术合成的复合材料的分类,并着重综述... Pickering乳液聚合技术是在微纳米固体颗粒稳定的乳液基础上进行聚合的一种新型反应技术,在合成功能复合材料的应用方面获得了特别的关注。介绍了Pickering乳液的稳定机理和基于Pickering乳液聚合技术合成的复合材料的分类,并着重综述了其在制备新型载药材料、吸附分离材料和传感检测材料等方面的研究现状,同时还展望了其发展前景。 展开更多
关键词 Pickering乳液 固体颗粒乳化剂 乳液聚合 复合材料
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环保型生物基印花胶浆用丙烯酸乳液的合成及其应用研究
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作者 韩珺 卢杰宏 +2 位作者 陈任 赵文爱 袁腾 《涂料工业》 CAS CSCD 北大核心 2023年第11期39-45,共7页
以甲基丙烯酸月桂酯(LMA)和丙烯酸异冰片酯(IBOA)为主单体,和丙烯酸(AA)、甲基丙烯酸甲酯(MMA)等单体通过调整反应过程中乳化剂TO 3070的使用量,经半连续种子乳液聚合反应得到一系列高固含量生物基丙烯酸酯乳液,在室温干燥后放入干燥箱... 以甲基丙烯酸月桂酯(LMA)和丙烯酸异冰片酯(IBOA)为主单体,和丙烯酸(AA)、甲基丙烯酸甲酯(MMA)等单体通过调整反应过程中乳化剂TO 3070的使用量,经半连续种子乳液聚合反应得到一系列高固含量生物基丙烯酸酯乳液,在室温干燥后放入干燥箱对其进行进一步固化交联制备成膜,并将乳液制成印花胶浆进行印花测试。测试了涂层的各项性能,探讨了乳化剂对固化膜热力学性能、力学性能、黏度和疏水性能等的影响。结果表明:随着乳化剂TO 3070使用量的增加,单体的转化率达到98.9%,固含量达47.40%,同时固化膜的断裂伸长率达413.88%。TO 3070用量为8 g时,涂层表面的水接触角从66.4°提高到78.5°,耐水性改善显著,同时印花测试中,印制品的弹性和耐洗牢度有了明显的提升。 展开更多
关键词 甲基丙烯酸月桂酯 乳液聚合 乳化剂 生物基丙烯酸酯乳液 印花胶浆
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乳液聚合中的反应型乳化剂研究进展 被引量:31
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作者 朱明月 乔卫红 +2 位作者 毕晨光 李鹏飞 李宗石 《化工进展》 EI CAS CSCD 北大核心 2006年第5期490-494,501,共6页
介绍了反应型乳化剂的最近研究进展,并简述了其结构、分类和特点。探讨了可聚合乳化剂应用效果的几个影响因素和最佳可聚合乳化剂行为。对设计和使用可聚合乳化剂具有一定的指导作用。
关键词 乳液聚合 反应型乳化剂 可聚合乳化剂 影响因素
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加料方法对St-BA-MAA乳胶粒子的影响 被引量:21
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作者 谭必恩 张洪涛 +1 位作者 胡芳 李建宗 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2000年第3期39-42,共4页
用 3种不同的加料方法和两种不同的加料顺序 ,制备了苯乙烯 -丙烯酸丁酯 -甲基丙烯酸聚合物复合乳液。测定了聚合物乳胶粒子的大小和分布 ;用滴定法分析了羧酸基团在乳胶粒子中的分布 ,并考察了乳液的碱增稠性 ;还测定了胶膜的溶胀性能... 用 3种不同的加料方法和两种不同的加料顺序 ,制备了苯乙烯 -丙烯酸丁酯 -甲基丙烯酸聚合物复合乳液。测定了聚合物乳胶粒子的大小和分布 ;用滴定法分析了羧酸基团在乳胶粒子中的分布 ,并考察了乳液的碱增稠性 ;还测定了胶膜的溶胀性能。初步探讨了在复合乳化剂存在下聚合方法 -成核机理 -粒子微观结构 -乳胶性能之间的关系。 展开更多
关键词 乳液聚合 聚合方法 乳化剂 碱增稠性 St-BA-MAA
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丙烯酸钠反相乳液聚合 被引量:18
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作者 徐相凌 张志成 +2 位作者 费宾 葛学武 张曼维 《高分子学报》 SCIE CAS CSCD 北大核心 1998年第2期134-138,共5页
以阴离子乳化剂制备丙烯酸钠反相乳液,用γ射线引发其聚合,用扫描电镜观测了聚合前后粒径的变化;并在聚合过程中改变剂量率观测了聚合速率的变化.这两个实验结果都显示聚合以液滴成核为主,即聚合机理类似于悬浮聚合.与以司盘80... 以阴离子乳化剂制备丙烯酸钠反相乳液,用γ射线引发其聚合,用扫描电镜观测了聚合前后粒径的变化;并在聚合过程中改变剂量率观测了聚合速率的变化.这两个实验结果都显示聚合以液滴成核为主,即聚合机理类似于悬浮聚合.与以司盘80为乳化剂的丙烯酸钠反相乳液聚合相比,体系与司盘体系的聚合动力学基本相似;但是体系中的分散液滴比司盘体系要大,结果使得在动力学上体系更类似于悬浮聚合的动力学.从聚合机理看,反相乳液聚合实际上就是粒子分散得比较小的反相悬浮聚合. 展开更多
关键词 反相乳液聚合 乳液聚合 丙烯酸钠 聚丙烯酸钠
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两亲聚合物溶液性质及其乳液聚合的研究进展 被引量:23
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作者 徐祖顺 封麟先 +2 位作者 易昌凤 陈永春 程时远 《高分子材料科学与工程》 EI CAS CSCD 北大核心 1998年第4期1-4,共4页
综述了两亲聚合物溶液性质以及作为乳化剂的乳液聚合研究进展和现状,介绍了两亲聚合物溶液的特殊性质,阐述了作为乳化剂的独特作用。
关键词 两亲聚合物 乳液聚合 高聚物溶液
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