黄麻纳米原纤增强壳聚糖膜的制备及表征
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摘要
以黄麻为原料,先用化学处理得到黄麻纤维素,再用超微粉碎机处理,分离出黄麻纳米原纤,用黄麻纳米原纤增强壳聚糖膜得到复合膜。通过扫描电镜(SEM)、傅里叶变换红外吸收光谱(FTIR)、X射线衍射(XRD)、拉伸强度测试、紫外吸收光谱(UV)进行了表征及分析。结果表明,黄麻原纤在壳聚糖膜中具有良好的分散性与光透性,含黄麻原纤20%的壳聚糖复合膜具有较高的抗拉强度和模量,其分别为152.31 MPa和2.20 GPa,较纯壳聚糖膜提高了175.87%和168.29%。
Nano fibrils was extracted from jute by means of a super-grinding method. The chitosan composite films were reinforced by jute nano firbrils. The composite films were characterized by SEM,FTIR,XRD,tensile test and UV. The result showed that jute nano fibrils were dispersed in the chitosan matrix evenly with good light transmittance,the chitosan composite film with 20% jute nano fibrils was obtained with high tensile strength(152. 31 MPa) and Young's modulus(2. 20 GPa),improved by 175. 87% and168. 29% respectively compared with pure chitosan film.
Nano fibrils was extracted from jute by means of a super-grinding method. The chitosan composite films were reinforced by jute nano firbrils. The composite films were characterized by SEM,FTIR,XRD,tensile test and UV. The result showed that jute nano fibrils were dispersed in the chitosan matrix evenly with good light transmittance,the chitosan composite film with 20% jute nano fibrils was obtained with high tensile strength(152. 31 MPa) and Young's modulus(2. 20 GPa),improved by 175. 87% and168. 29% respectively compared with pure chitosan film.
引文
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[2]王亚珍.壳聚糖基复合膜的制备、性能及应用[D].上海:上海海洋大学,2015.
[3]叶代勇.纳米纤维素的制备[J].化学进展,2007,19(10):1568-1575.
[4]段玲,于伟东.黄麻微纤化纤维素的制备及特征分析[J].应用化工,2015(11):2014-2017.
[5]Nakagaito A N,Fujimura A,Sakai T,et al.Production of microfibrillated cellulose(MFC)-reinforced polylactic acid(PLA)nanocomposites from sheets obtained by a papermaking-like process[J].Composites Science and Technology,2009,69(7):1293-1297.
[6]徐寅,王家俊,刘幸幸,等.纳米纤维素晶须/壳聚糖天然可降解复合膜的制备与性能[J].浙江理工大学学报,2011,28(6):841-845.
[7]Khan A,Khan R A,Salmieri S,et al.Mechanical and barrier properties of nanocrystalline cellulose reinforced chitosan based nanocomposite films[J].Carbohydrate Polymers,2012,90(4):1601-1608.
[8]Alemdar A,Sain M.Isolation and characterization of nanofibers from agricultural residues-wheat straw and soy hulls[J].Bioresource Technology,2008,99(6):1664-1671.
[9]Kaushik A,Singh M.Isolation and characterization of cellulose nanofibrils from wheat straw using steam explosion coupled with high shear homogenization[J].Carbohydrate Research,2011,346(1):76-85.
[10]Khan R A,Salmieri S,Dussault D,et al.Production and properties of nanocellulose-reinforced methylcellulosebased biodegradable films[J].Journal of Agricultural&Food Chemistry,2010,58(13):7878-7885.
[11]Xie Y L,Wang M J,Yao S J.Preparation and characterization of biocompatible microcapsules of sodium cellulose sulfate/chitosan by means of layer-by-layer self-assembly[J].Langmuir,2009,25(16):8999-9005.
[12]郑化,杜予民.交联壳聚糖膜的制备及其性能的研究[J].高等学校化学学报,2000,21(5):809-812.
[13]强志斌,陈寅生,郭华文,等.壳聚糖膜的制备及膜性能[J].东华大学学报:自然科学版,2007,33(2):212-215.
[14]陈新,黄郁芳.不同交联剂含量对戊二醛交联壳聚糖膜结构与性能影响的研究[J].化学学报,2000,58(12):1654-1659.