Synthesis of grafted polysilsesquioxane by ring-opening polymerization of lactide and trimethylene carbonate

被引：3
作者：
Kashio, Mikihiro [2 ]
Sugizaki, Toshio [2 ]
Tanaka, Yorihisa [1 ]
Yamamoto, Shin-ichi [1 ]
Moriya, Osamu [1 ]
Nishikubo, Tadatomi [3 ]
机构：
[1] Natl Def Acad, Dept Appl Chem, Yokosuka, Kanagawa 2398686, Japan
[2] Lintec Co, Res Lab, Warabi, Japan
[3] Kanagawa Univ, Fac Engn, Dept Mat & Life Chem, Yokohama, Kanagawa, Japan
来源：
POLYMER JOURNAL | 2011年 / 43卷 / 06期
关键词：
graft polymerization; lactide; polysilsesquioxane; ring-opening polymerization; trimethylene carbonate; RADICAL POLYMERIZATION; TRIBLOCK COPOLYMERS; HYBRID MATERIALS; SILSESQUIOXANE; POSS; POLYMERS; SURFACE; CAGE;
D O I：
10.1038/pj.2011.22
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The polysilsesquioxane (PSQ) containing 3-aminopropyl and phenyl groups (APSQ) was prepared from the corresponding trimethoxysilanes by co-condensation under basic conditions. The amino groups on APSQ were used as the initiator species for the graft polymerization of 1,3-trimethylene carbonate (TMC) and L-(-)-lactide (LA). The ring-opening polymerization of TMC and LA in the presence of the catalytic 1-trimethylsilylimidazole proceeded effectively to afford the PSQ with poly(TMC) and/or poly(LA) as the graft chains. The grafted PSQ containing poly(LA) showed the heat durability as an advantage of the hybrid polymer. In differential scanning calorimetry analysis, the grafted random copolymer of TMC and LA showed no clear endotherm corresponding to melting point (T(m)). For the poly(LA)-grafted PSQ, the peak indicating T(m) was observed in the first heating run, but the corresponding peak was very small in the second run. Polymer Journal (2011) 43, 525-530; doi:10.1038/pj.2011.22; published online 30 March 2011
引用
收藏
页码：525 / 530
页数：6
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