Organic-inorganic poly(hydroxyether of bisphenol A) copolymers with double-decker silsesquioxane in the main chains
Organic-inorganic poly(hydroxyether of bisphenol A) copolymers with double-decker silsesquioxane in the main chains
复制标题
主链具有双层倍半硅氧烷的有机-无机聚（双酚A羟基醚）共聚物
DOI：
10.1039/c1jm13596a
复制
发表时间：
2011-01-01
影响因子：
--
通讯作者：
Zheng, Sixun
中科院分区：
文献类型：
--
作者：
Wang, Lei;Zhang, Chongyin;Zheng, Sixun
本文报道了以双酚A和双环氧树脂为原料，通过直接聚合法合成了主链含多面体低聚倍半硅氧烷（POSS）的有机-无机聚双酚A羟基醚（PH）共聚物。为此，一种新的双环氧POSS大分子单体，即，以3，13-二氢八苯基双层倍半硅氧烷（简称二氢DDSQ）为原料，与烯丙基缩水甘油醚进行硅氢加成反应，合成了3，13-二缩水甘油氧基丙基八苯基双层倍半硅氧烷（简称二缩水甘油氧基丙基DDSQ）。使用二缩水甘油氧基丙基DDSQ和双酚A的二缩水甘油醚（DGEBA）两者作为双环氧单体。通过调节DDSQ与DGEBA的比例，得到了主链上POSS含量可变的PH共聚物。结果表明，在DDSQ含量不太高的情况下，直接聚合法可以成功地得到主链含有POSS的PH共聚物。差示扫描量热法（DSC）和热重分析（TGA）表明，POSS含量对有机-无机PH共聚物的玻璃化转变温度（Tg）有很大的影响。热重分析（TGA）表明，共聚物的稳定性显着提高在最大降解速率和降解残留物的产率的温度方面。由于主链中POSS的存在，有机-无机共聚物的表面疏水性与对照PH相比显著改善。
In this communication, we reported the synthesis of organic-inorganic poly(hydroxyether of bisphenol A) (PH) copolymers with polyhedral oligomeric silsesquioxane (POSS) in the main chains via direct polymerization between diepoxy and bisphenol A. Toward this end, a novel diepoxy POSS macromer, i.e., 3,13-diglycidyloxypropyloctaphenyl double-decker silsesquioxane (denoted diglycidyloxypropyl DDSQ) was synthesized via the hydrosilylation between 3,13-dihydrooctaphenyl double-decker silsesquioxane (denoted dihydro DDSQ) and allyl glycidyl ether. Both diglycidyloxypropyl DDSQ and diglycidyl ether of bisphenol A (DGEBA) were used as the diepoxy monomers. By adjusting the ratio of diglycidyloxypropyl DDSQ to DGEBA, the PH copolymers with variable content of POSS in the main chains were obtained. It is found that with the direct polymerization the PH copolymers with POSS in the main chains of polymers can be successfully obtained while the content of diglycidyloxypropyl DDSQ was not very high. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) showed that the glass transition temperatures (Tg) of the organic-inorganic PH copolymers were quite dependent on the contents of POSS in the copolymers. Thermogravimetric analysis (TGA) indicates that the stability of the copolymers was significantly improved in terms of the temperatures at the maximum rate of degradation and the yields of degradation residues. Owing to the presence of POSS in the main chains, the surface hydrophobicity of the organic-inorganic copolymers was significantly improved compared to control PH.