Surface-initiated polymerization of styrene from one-step prepared thiol-functionalized organoclays

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• 作者：LeAnna Survant^a ; Marina Andrejevic^b ; Jesse Picker^b ; Jasper Van Den Hoek^b ; Eric Fossum^b ; Isabelle Lagadic^a ; ^{lagadici1@nku.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：MTMS ; mercaptopropyltrimethoxysilane ; Mg-MTMS ; thiol-functionalized organoclay material ; AIBN ; 2 ; 2&prime ; -azobisisobutyronitrile ; PSg ; grafted polystyrene ; PSf ; free (non-grafted) polystyrene ; PSg-Mg-MTMS ; polystyrene-grafted Mg-MTMS material
• 刊名：Polyhedron
• 出版年：2016
• 出版时间：16 August 2016
• 年：2016
• 卷：114
• 期：Complete
• 页码：37-41
• 全文大小：669 K

文摘

A polystyrene–organoclay composite material was prepared by surface-initiated radical polymerization of styrene from the surface of thiol-functionalized organoclays synthesized in a one-step process. Characterizations of the composite by infrared spectroscopy (FTIR) and powder X-ray diffraction (PXRD) confirmed a direct covalent bonding between the polystyrene and the clay layers and an essentially exfoliated structure. The significant amount of SH reactive sites present in the organoclay resulted in a high grafting percentage (PG%, 49.8%) and in a high content of grafted polystyrene in the material (35.8 wt%), indicating that such polystyrene-grafted organoclays could be easily used as polymer fillers for incorporation in various polymeric matrices.