Synthesis and characterization of cellulose- b -polystyrene
Synthesis and characterization of cellulose- b -polystyrene
复制标题
纤维素-b-聚苯乙烯的合成与表征
DOI：
10.1038/pj.2009.342
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发表时间：
2010
期刊：
影响因子：
2.8
通讯作者：
K. Fukuda
中科院分区：
文献类型：
--
作者：
Shunsuke Yagi;Natsuki Kasuya;K. Fukuda
采用原子转移自由基聚合法合成了纤维素与聚苯乙烯（PS）的嵌段共聚物。通过将2-氯乙酰胺引入到纤维素的还原端（聚合度= 20、50、250）来制备大分子引发剂（MI）。随后，在130 ℃下，在N，N，N′，N ″，N ″-五甲基二乙烯三胺/CuCl或CuBr/抗坏血酸体系中，MI与苯乙烯单体进行共聚。用核磁共振氢谱和分子排阻色谱对共聚物进行了表征。动力学研究表明，聚合反应是可控的。通过显微镜观察证实了共聚物在增容不混溶的纤维素/PS共混物中的功效。用热重法研究了共混物的热分解和热氧分解机理。
A block copolymer of cellulose and polystyrene (PS) was synthesized through atom transfer radical polymerization. Macroinitiators (MIs) were prepared by introducing 2-chloroacetamide to the reducing end of cellulose (degree of polymerization= 20, 50, 250). Subsequently, MIs were copolymerized with styrene monomer in a system of N, N, N′, N ″, N ″-pentamethyldiethylenetriamine/CuCl or CuBr/ascorbic acid at 130 C. The resulting copolymers were characterized by 1 H nuclear magnetic resonance and size-exclusion chromatography. The kinetic study indicated that the polymerization was controllable. The efficacy of copolymers in compatibilizing an immiscible cellulose/PS blend was confirmed by microscopic observation. The mechanism of thermal and thermo-oxidative decomposition of the blend was investigated by thermogravimetry.
影响因子：
5.5
作者：
KATO, M;KAMIGAITO, M;HIGASHIMURA, T
通讯作者：
HIGASHIMURA, T