Preparation And Characterization Of The High Molecular Weight Copolymer Of Styrene And Maleic Anhydride/Montmorillonite Nanocomposites

In this paper the novel green nonionic surfactant(APG) was used to insert organic montmorillonite(O-MMT) secondly to prepare APG₂-O₁-MMT for the first time,which possessed stable dispersion in nonpolar solvent. We synthesized the high molecular weight copolymer of styrene and maleic anhydride, and the same time we synthesized the high molecular weight SMA /MMT nanocomposites by in-situ polymerization intercalation approach for the first time. And their structure and properties are analyzed and studied systemically.(1)The novel green nonionic surfactant(APG) was used to insert O-MMT secondly to prepare APG₂-O₁-MMT, which possessed stable dispersion in nonpolar solvent. The intercalation interlayer structure and configuration of APG₂-O₁-MMT were characterized by FT-IR, XRD, TG The results show that APG has been inserted to the interlayer of O-MMT, and the interlayer spacing of O-MMT increased by 0.917nm. We studied the affection of acid, reactive temperature, acidification time, organizing time and pH of the solution to prepare APG₂-O₁-MMT.(2) The high molecular weight SMA was synthesized by solution polymerization, and the structure of the high molecular weight SMA was characterized by FT-IR, TG, dissolving ability, molecular weight, the results show that the product is the high molecular weight SMA. The affection of reactive time, initiator concentration, reactive temperature, mol ratio to properties of the high molecular weight SMA were studied(3) The high molecular weight SMA /MMT nanocomposites was synthesized by in-situ polymerization intercalation approach, and the structure of the high molecular weight SMA /MMT nanocomposites was characterized by FT-IR, XRD, TG, dissolving ability, molecular weight, the results show that the product is the high molecular weight SMA /MMT nanocomposites. The affection of different quantity O-MMT to properties of the high molecular weight SMA /MMT nanocomposites was studied, and the properties of the high molecular weight SMA/O-MMT nanocomposites were compared with the high molecular weight SMA/APG₂-O₁-MMT nanocomposites, the results are that the properties of the high molecular weight SMA/APG₂-O₁-MMT nanocomposites are better than the high molecular weight SMA /O-MMT nanocomposites.