林产化学与工业2013，Vol.33Issue(3)：24-30,7.DOI:10.3969/j.issn.0253-2417.2013.03.005
冷冻预处理对纳米纤维素/聚乙烯醇膜性能的影响
Effect of Frozen Pretreatment on Properties of Nano-cellulose/Polyvinyl Alcohol Membrane
摘要
Abstract
The nano-cellulose (NCC) with cellulose Ⅱ type was prepared by sulfuric acid hydrolysis after alkali pretreatment.NCC/polyvinylalcohol(PVA) membrane of different mass fraction of NCC was prepared through solution blending and frozen pretreatment,respectively.Membrane morphology,dispersion of NCC,transmittance,tensile strength,elongation at break and thermal properties were characterized by fourier transform infrared (FT-IR),environmental scanning electron microscopy (SEM),UV-Vis spectrophotometer (UV),thermo-gravimetric (TG)analyzer,respectively.The results indicated that addition of 0.5 ％ NCC showed reinforcement effect on tensile strength of the NCC/PVA membrane,and the tensile strength of NCC/PVA membrane increased 15 ％ in contrast to the pure PVA membrane (control sample).Furthermore,there was no negative impact on the transmittance of the NCC/PVA membrane due to the good dispersion ability of NCC in PVA sustance.The dispersibility of NCC in PVA membrane was better after frozen pretreatment,and the tensile strength of NCC/PVA membrane increased by 16％ than that of control sample when 0.5 ％ NCC was added.A slightly increase of transmittance was observed,as well.关键词
冷冻预处理/纳米纤维素/共混膜/共混机理/透光率Key words
frozen pretreatment/ nano-cellulose/ blending membrane/ blending mechanism/ transmittance分类
化学化工引用本文复制引用
吴鹏,刘志明,赵煦,谢成,方桂珍..冷冻预处理对纳米纤维素/聚乙烯醇膜性能的影响[J].林产化学与工业,2013,33(3):24-30,7.基金项目
国家自然科学基金资助项目(31070633) （31070633）
人力资源和社会保障部留学回国人员科技活动择优资助项目(07041311401) （07041311401）
国家级大学生创新训练项目(1110225029) （1110225029）
