High Toughness and Light Transmittance of PMMA Composite Prepared via In-Situ Polymerization with Incorporating Self-Assembled Dendritic Gel Networks

High Toughness and Light Transmittance of PMMA Composite Prepared via In-Situ Polymerization with Incorporating Self-Assembled Dendritic Gel Networks
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通过原位聚合制备具有自组装树枝状凝胶网络的高韧性和透光性 PMMA 复合材料

DOI:
10.1080/10601325.2014.864932
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发表时间:
2014-01
影响因子:
2.5
通讯作者:
Wang, Xu
Wang, Xu
中科院分区:
化学4区
文献类型:
--
作者:
Chen, Si;Ye, Feng;Tang, Guodong;Wang, Xu

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利用树枝状凝胶因子自组装凝胶网络,通过原位热聚合制备了高韧性、高透光率的PMMA复合材料。少量树枝状大分子的加入可以显著提高PMMA复合材料的韧性,同时不影响其透光率。采用扫描电镜、动态力学热分析、冲击强度测试和紫外-可见分光光度计对复合材料的相形态、力学性能和光学性能进行了研究。结果表明,在原位聚合过程中,树枝状大分子自组装形成的凝胶网络保持完整,而含有极少量(≤ 1.0wt%)G2-C12-G2 orgelator-1的PMMA复合材料具有比PMMA均聚物更高的储能模量、韧性和玻璃化转变温度。
High toughness and light transmittance PMMA composite was prepared via in-situ thermal polymerization with gel networks self-assembling from dendritic gelators. Significant improvements of PMMA composite's toughness could be achieved by adding a small amount of dendrimers, without losing its light transmittance. Phase morphology, mechanical properties and optical performance of the composite were investigated with SEM, DMTA, impact strength test and UV–Vis spectrophotometer, respectively. The results showed that gel networks constructed from the dendrimers’ self-assembling kept intact during in-situ polymerization, while the PMMA composite containing very small amount(≤1.0 wt%) of G2-C12-G2orgelator-1 exhibits higher storage modulus, toughness and glass transition temperature than those of PMMA homopolymer.
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