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学科主题: 高分子化学
题名: Synthesis and microphase separation of polystyrene-b-polylactide block copolymers aimed at preparation of ordered nanoparticle/block copolymer hybrid materials
其他题名: 合成聚苯乙烯/聚乳酸二嵌段共聚物及其微相分离研究
作者: Hou XD(侯小东); Li QB(李巧波); Cao AM(曹阿民)
通讯作者: 侯小东 ; 曹阿民
刊名: Polym. Int.
发表日期: 2014
DOI: 10.1002/pi.4746
卷: 63, 期:7, 页:1159-1167
收录类别: SCI
英文摘要: A new nanoparticle/block copolymer (NP/BCP) hybrid material combining the unique properties of BCP poly(styrene)-b-poly(D-lactide) (PS-b-PDLA) and inorganic NP quantum dots CdSe was developed. A systematic study on the microphase separation of a series of PS-b-PDLAs by small-angle X-ray scattering showed that the degree of order of the separated microdomains depended on the initial state of the BCP and the measurement temperature and can be improved through isothermal crystallization of PDLA, thermal annealing and shear field etc. Incorporating a small amount of NPs into the BCP matrix can improve the mobility of the polymer chains and thus promote self-assembly of the BCP, which leads to hierarchically ordered structures. Excess NPs, however, cannot be completely incorporated into the PDLA domains, resulting in the phase transformation of the BCP, destruction of the ordered structure and even macroscopic phase separation due to the aggregation of NPs. An important observation is that stereocomplexation between PDLA and poly(L-lactide) could provide a driving force to promote microphase separation of the BCP. The strategy presented in the current work has potential applications for developing highly ordered NP/BCP hybrid materials. (C) 2014 Society of Chemical Industry
语种: 英语
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内容类型: 期刊论文
URI标识: http://ir.sioc.ac.cn/handle/331003/38894
Appears in Collections:高分子材料研究室_期刊论文

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作者单位: 中科院上海有机化学研究所

Recommended Citation:
Hou XD,Li QB,Cao AM. Synthesis and microphase separation of polystyrene-b-polylactide block copolymers aimed at preparation of ordered nanoparticle/block copolymer hybrid materials[J]. Polym. Int.,2014,63(7):1159-1167.
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