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摘要
采用熔融缩聚的方法合成生物质聚酰胺(BDI),以氧化石墨烯(GO)和凹凸棒土(ATGO)为增强剂,通过静电纺丝制备了聚酰胺/氧化石墨烯(BDI/GO复合膜)、聚酰胺/凹凸棒土复合膜(BDI/AT复合膜)。采用黏度测试、扫描电子显微镜(SEM)、热重分析(TG)、红外测试(FT-IR)、X射线(XRD)等测试方法对纤维膜的结构性能进行了分析比较研究。研究结果表明,在GO用量为0.5%制得的BDI/GO复合膜,具有形貌良好的纤维,最大失重温度达到447.9℃,热稳定性比纯BDI得到提高,但不明显,弹性模量达到6.48MPa,是纯BDI纤维膜0.14MPa的60倍左右,拉伸强度达到1.77MPa,是纯BDI纤维膜0.56MPa的4倍左右;在AT用量为5%制得的BDI/AT复合膜,具有形貌良好的纤维,最大失重温度达到447.7℃,热稳定性有所提高,但不明显,弹性模量达到0.52MPa是纯BDI纤维膜0.14MPa的8倍左右,拉伸强度达到1.88MPa是纯BDI纤维膜0.56MPa的4倍左右。
Abstract
Biomass polyamide (BDI) was synthesized by melt polycondensation.graphene and attapulgite (AT) were used as reinforcing agents.Polyamide/GO (BDI/GO) and polyamide/attapulgite (BDI/AT) composite membranes were prepared by electrospinning.The structure and properties of the membranes were analyzed and compared by means of viscosity test,scanning electron microscopy (SEM),thermogravimetric analysis (TG),infrared measurement (FT-IR),X-ray (XRD).The results shown that the BDI/graphene composite film prepared with 0.5% graphene had good morphology,the maximum weight loss temperature was 447.9℃,and the thermal stability was improved compared with pure BDI.However,the modulus of elasticity was 6.48MPa,about 60 times of 0.14MPa,the tensile strength was 1.77MPa,and about 4 times of 0.56MPa.The BDI/AT composite film prepared with 5% AT had good morphology,the maximum weight loss temperature was 447.7℃ and the thermal stability was improved.However,the modulus of elasticity of 0.52MPa was about 8 times of 0.14MPa of pure BDI fiber membrane,and the tensile strength of 1.88MPa was about 4 times of 0.56MPa of pure BDI fiber membrane.
关键词
生物质聚酰胺
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氧化石墨烯
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凹凸棒土
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拉伸性能
Key words
BDI
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GO
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AT
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tensile property
生物质聚酰胺材料的增强改性研究[J].
化工新型材料, 2019, 47(10): 60-64 DOI:
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基金资助
国家自然科学基金面上项目(51273005);北京市教委市属高校创新能力提升计划项目(TJSHG201510012014);北京市教委科技发展计划重点项目暨北京自然科学基金资助重点项目(KZ201510012013);北京服装学院创新团队建设计划(BIFTTD201904)
