Amphiphilic block and statistical copolymers with pendant glucose residues: Controlled synthesis by living cationic polymerization and the effect of copolymer architecture on their properties
Amphiphilic block and statistical copolymers with pendant glucose residues: Controlled synthesis by living cationic polymerization and the effect of copolymer architecture on their properties
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具有侧链葡萄糖残基的两亲性嵌段和统计共聚物：通过活性阳离子聚合进行控制合成以及共聚物结构对其性能的影响
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
T. Miyamoto
中科院分区：
文献类型：
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作者：
Kenji Yamada;M. Minoda;T. Fukuda;T. Miyamoto
通过异丁基 VE (IBVE) 和携带 1,2:5,6-二-O-异亚丙基-D-葡萄糖 (IpGlcVE) 的 VE 的活性阳离子聚合，然后脱保护，合成了带有侧链葡萄糖残基的乙烯基醚 (VE) 的两亲性嵌段和统计共聚物。嵌段共聚物是通过两阶段顺序嵌段共聚制备的，而统计共聚物是通过两种单体的混合物共聚获得的。通过统计共聚估计的单体反应性比率为r 1 (IBVE) = 1.65 和r 2 (IpGlcVE) = 1.15。所得统计共聚物沿主链的共聚单体组成几乎是均匀的。嵌段共聚物和统计共聚物都具有窄的分子量分布（重均分子量/数均分子量~1.1）。凝胶渗透色谱、静态光散射和选择性溶剂中的自旋晶格弛豫时间测量表明，嵌段共聚物形成多分子胶束，可能具有疏水性聚（IBVE）核和携带葡萄糖的聚（VE）壳，而具有几乎相同分子量和链段组成的统计共聚物分子分散在溶液中。还通过接触角测量研究了嵌段共聚物和统计共聚物的溶剂浇铸膜的表面性质。
Amphiphilic block and statistical copolymers of vinyl ethers (VEs) with pendant glucose residues were synthesized by the living cationic polymerization of isobutyl VE (IBVE) and a VE carrying 1,2:5,6-di-O-isopropylidene-D-glucose (IpGlcVE), followed by deprotection. The block copolymer was prepared by a two-stage sequential block copolymerization, whereas the statistical copolymer was obtained by the copolymerization of a mixture of the two monomers. The monomer reactivity ratios estimated with the statistical copolymerization were r 1 (IBVE) = 1.65 and r 2 (IpGlcVE) = 1.15. The obtained statistical copolymers were nearly uniform with the comonomer composition along the main chain. Both the block and statistical copolymers had narrow molecular weight distributions (weight-average molecular weight/number-average molecular weight ∼ 1.1). Gel permeation chromatography, static light scattering, and spin-lattice relaxation time measurements in a selective solvent revealed that the block copolymer formed multimolecular micelles, possibly with a hydrophobic poly(IBVE) core and a glucose-carrying poly(VE) shell, whereas the statistical copolymer with nearly the same molecular weight and segment composition was molecularly dispersed in solution. The surface properties of the solvent-cast films of the block and statistical copolymer were also investigated with the contact-angle measurement.
影响因子：
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作者：
Choi, SK;Mammen, M;Whitesides, GM
通讯作者：
Whitesides, GM