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甲酰胺与超声处理 LD H/PV A复合膜的制备和性能研究

甲酰胺与超声处理 LD H/PV A复合膜的制备和性能研究方彩平;陈丽;刘红柱;杨文;杨保俊

【期刊名称】《合肥工业大学学报(自然科学版)》

【年(卷),期】2014(000)009

【摘要】The layered double hydroxides(LDHs) were successfully delaminated in formamide by soni-cation .Composite film was prepared subsequently by using delaminated LDH and polyvinyl alcohol (PVA) as the raw materials .The structure of the raw LDHs and delaminated LDHs was characterized by transmission electron microscope (T EM ) .T he structure ,mechanical properties and thermal prop-erties of LDH/PVA composite film were characterized by wide-angle X-ray diffraction(WAXD) ,elec-tronic universal testing machine and differential scanning calorimetry (DSC) .The results showed that the delaminated LDH could be well dispersed in the formamide .The delaminated LDH had an impor-tant role in promoting the crystallization of PVA .The tensile strength and tensile modulus of the composite film were enhanced by 78% and 97% respectively in comparison with the pristine PVA film .Because there is no intercalating agent ,like citrate etc ,being introduced during the manufactur-ing process ,it is a very simple and practical process to obtain high-performance polymer composite film .%文章以甲酰胺为分散液,采用超声强化方式对LDH 进行了剥离,利用剥离后的LDH 和聚乙烯醇(PVA)制备复合薄膜。用透射电镜对处理前后的LDH进