Bio nanocomposites based on cationic starch reinforced with montmorillonite and cellulose nanocrystals: Fundamental properties and biodegradability study.
Bio nanocomposites based on cationic starch reinforced with montmorillonite and cellulose nanocrystals: Fundamental properties and biodegradability study.
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基于蒙脱土和纤维素纳米晶体增强的阳离子淀粉的生物纳米复合材料：基本性能和生物降解性研究。
DOI：
10.1016/j.ijbiomac.2020.01.007
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发表时间：
2020
影响因子：
8.2
通讯作者：
H. Sharifi
中科院分区：
文献类型：
--
作者：
khashayar vaezi;G. Asadpour;H. Sharifi
采用溶液流延法制备了阳离子淀粉（CS）/蒙脱石（MMT）/纳米晶纤维素（NCC）生物纳米复合材料。研究了 NCC 和 MMT 纳米颗粒对 CS 薄膜光学、阻隔和机械性能的影响。 X射线衍射结果证实了CS/MMT/NCC薄膜的部分插层和部分剥离结构。 FTIR测试显示CS羟基和纳米颗粒之间形成了新的氢键。 FESEM分析证明NCC和MMT在CS基体中的分散是均匀的。 MMT 和 NCC 存在时，CS 基薄膜的光学透明度几乎不受影响。含有 5 wt% NCC 和 MMT 的三元纳米复合材料显示出最佳的性能改进。与纯CS薄膜相比，纳米复合材料的拉伸强度和拉伸模量分别增加了61%和73%。添加 NCC 后，纳米复合材料表现出最高的崩解率，并且良好地降低了水蒸气和氧气的渗透性。
The bio-nanocomposites of cationic starch (CS)/montmorillonite (MMT)/nanocrystalline cellulose (NCC) were produced by solution casting method. The effects of NCC and MMT nanoparticles on optical, barrier and mechanical properties of CS films were investigated. X-ray diffraction results confirmed the partly intercalated and partly exfoliated structure of CS/MMT/NCC films. The FTIR test showed the forming of new hydrogen bonds between the CS hydroxyl groups and nanoparticles. FESEM analysis proved that the dispersion of NCC and MMT in the CS matrix is homogenous. The optical clarity of CS based films was almost unaffected in presence of MMT and NCC. The ternary nanocomposites with 5 wt% NCC and MMT showed the best improvements in the properties. The tensile strength and the tensile modulus of nanocomposites increased up to 61% and 73% respectively, compared to the pure CS film. The nanocomposites demonstrated highest disintegrability rate and good reduction in water vapor and oxygen permeability with addition of NCC.