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高强度两性离子聚合物防污减阻水凝胶涂层的制备
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作者 陈再宏 虞海超 +4 位作者 吴子良 左敏 宋义虎 杜淼 郑强 《高分子学报》 SCIE CAS CSCD 北大核心 2024年第1期99-107,共9页
在两性离子甲基丙烯酰乙基磺基甜菜碱(SBMA)聚合物体系中引入天然、易得的κ-卡拉胶(κ-CG)调控前体溶液的流变行为,采用涂覆工艺在硅烷偶联剂处理的玻璃表面制备了多组分双网络水凝胶涂层,并用锆离子(Zr4+)配位交联强化κ-CG网络结构.... 在两性离子甲基丙烯酰乙基磺基甜菜碱(SBMA)聚合物体系中引入天然、易得的κ-卡拉胶(κ-CG)调控前体溶液的流变行为,采用涂覆工艺在硅烷偶联剂处理的玻璃表面制备了多组分双网络水凝胶涂层,并用锆离子(Zr4+)配位交联强化κ-CG网络结构.双网络结构使两性离子水凝胶涂层的力学强度得到显著提高,其拉伸强度、断裂伸长率和杨氏模量最高可达2.51 MPa、1620.76%和1.67 MPa.该水凝胶涂层在玻璃表面呈强粘接状态,粘接能达2500 J·m^(-2).该水凝胶涂层在不同介质中均表现出较低的溶胀度,可避免因变形导致的涂层脱落.同时,SBMA使水凝胶表面形成致密水合层,在防污、减阻方面表现优异. 展开更多
关键词 两性离子聚合物 双网络水凝胶涂层 力学性能 防污性能
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Key progresses of MOE key laboratory of macromolecular synthesis and functionalization in 2021 被引量:2
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作者 Quan Wen Qiuquan Cai +15 位作者 Ping Fu Dan Chang Xiaoyi Xu Tian-Jiao Wen Guang-Peng wu Weipu Zhu Ling-Shu Wan Chengjian Zhang Xing-Hong Zhang Qiao Jin zi-liang wu Chao Gao Haoke Zhang Ning Huang Chang-Zhi Li Hanying Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2023年第5期174-186,共13页
In 2021,The MOE Key Laboratory of Macromolecular Synthesis and Functionalization in Zhejiang University had achieved several important results.First,a series of versatile organoboron catalysts were synthesized for rin... In 2021,The MOE Key Laboratory of Macromolecular Synthesis and Functionalization in Zhejiang University had achieved several important results.First,a series of versatile organoboron catalysts were synthesized for ring-opening(co)polymerizations.Second,a catalyst-free polycondensation mechanism was proposed for the production of polyesters with high molecular weights.Third,a co-assembly method that can fabricate films and coatings with controllable structures and properties on various substrates was demonstrated,providing a platform for the construction of novel surface coatings.Forth,facile methods for producing high-productivity poly(propylene carbonate)and semicrystalline polyester have been discovered.And linear non-conjugated polyesters exhibiting yellow-green clusteroluminescence were developed for the first time.Fifth,a supramolecular prodrug nano-assembly strategy has been developed for reactive nitrogen species potentiated chemotherapy.Sixth,a series of tough and stiff supramolecular hydrogels with shape memory properties have been used for information encryption.Seventh,reversible fusion and fission of wet-spun graphene oxide fibers has been successfully achieved.Eighth,three non-conjugated polypeptides were synthesized and the mechanism of clusteroluminescence was studied.Ninth,a series of conducting covalent organic frameworks with high electrical conductivity and carrier mobility have been used as high-performance chemiresistor,electrocatalyst,and organic field-effect transistor.Tenth,the exploration of non-fused electron acceptors,and their photostable mechanism are exemplified for developing high-performance,low-cost and eco-friendly polymer solar cells.Finally,gel-grown long-range ordering bulk-heterojunctions has achieved improved X-ray detector performance. 展开更多
关键词 Polymer Catalyst Surface coating Drug delivery GEL Graphene Organic optoelectronics
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十二烷基硫酸钠对聚乙烯醇亚浓水溶液流变行为的影响 被引量:5
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作者 徐绍深 杜淼 +2 位作者 宋义虎 吴子良 郑强 《高分子学报》 SCIE CAS CSCD 北大核心 2020年第4期403-410,I0005,共9页
表面活性剂会影响聚乙烯醇(PVA)分子间及分子内氢键形成,进而改变其水溶液的流变响应.本文在确定十二烷基硫酸钠(SDS)在PVA亚浓水溶液中的临界聚集浓度(CAC)和临界胶束浓度(CMCP)基础上,考察了SDS对PVA亚浓溶液(10 wt%)流变行为的影响.... 表面活性剂会影响聚乙烯醇(PVA)分子间及分子内氢键形成,进而改变其水溶液的流变响应.本文在确定十二烷基硫酸钠(SDS)在PVA亚浓水溶液中的临界聚集浓度(CAC)和临界胶束浓度(CMCP)基础上,考察了SDS对PVA亚浓溶液(10 wt%)流变行为的影响.研究发现,不同浓度SDScsur对PVA水溶液稳态流变行为的影响差异较大:(1)当csur CMCP,随着csur增加,胶束起物理交联点作用,ηa增大,复合溶液的动态储能模量亦显著增大.加入SDS后,PVA体系内结合水的数目降低,但当csur> CMC后,结合水的数目几乎不变,黏流活化能也表现出相近的变化规律.与稀溶液相比,SDS对PVA亚浓溶液的降黏幅度较大. 展开更多
关键词 聚乙烯醇 十二烷基硫酸钠 氢键 流变行为
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