Organic–inorganic copolymers with double‐decker silsesquioxane in the main chains by polymerization via click chemistry
Organic–inorganic copolymers with double‐decker silsesquioxane in the main chains by polymerization via click chemistry
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DOI：
10.1002/pola.26836
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发表时间：
2013-10
期刊：
影响因子：
--
通讯作者：
Kun Wei;Lei Wang;Sixun Zheng
中科院分区：
文献类型：
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作者：
Kun Wei;Lei Wang;Sixun Zheng
采用铜催化Huisgen 1，3-偶极环加成聚合法合成了一系列主链含多面体低聚倍半硅氧烷（POSS）的新型有机-无机共聚物。为此，我们合成了3，13-叠氮丙基八苯基双层倍半硅氧烷（DDSQ）。用该双官能度POSS大分子单体与不同乙烯单元数的α，ω-二炔基封端的低聚乙烯进行共聚。得到了POSS质量分数高达79%的有机-无机共聚物。凝胶渗透色谱表明，在所有情况下，成功地获得了高分子量的共聚物。差示扫描量热法表明，这些共聚物的玻璃化转变的幅度是非常微弱的，这表明负责的玻璃化转变的链段运动是高度限制与DDSQ笼在主链。热重分析表明，有机-无机杂化共聚物具有极高的热稳定性。接触角测量表明，这些有机-无机共聚物是高度疏水的，具有非常低的表面能。© 2013 Wiley Periodicals，Inc. J.波利姆科学，A部分：聚合物2013，51，4221-4232
A series of novel organic–inorganic copolymers with polyhedral oligomeric silsesquioxane (POSS) in the main chains were synthesized via the copper-catalyzed Huisgen 1,3-dipolar cycloaddition polymerization approach. Toward this end, we synthesized 3,13-azidopropyloctaphenyl double-decked silsesquioxane (DDSQ). This difunctional POSS macromer was used to copolymerize with α,ω-dialkynyl-terminated oligoethylenes with variable number of ethylene units. The organic–inorganic copolymers were obtained with the mass fraction of POSS up to 79%. Gel permeation chromatography showed that the high-molecular-weight copolymers were successfully obtained in all the cases. Differential scanning calorimetry showed that the amplitude of glass transitions for these copolymers was very feeble, suggesting that the segmental motions responsible for the glass transitions was highly restricted with DDSQ cages in the main chains. Thermogravimetric analysis showed that the organic–inorganic hybrid copolymers displayed extremely high thermal stability. Contact angle measurements showed that these organic–inorganic copolymers are highly hydrophobic and possessed very low surface energy. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2013, 51, 4221–4232