Rapid exfoliation of rectorite in quaternized carboxymethyl chitosan.
Rapid exfoliation of rectorite in quaternized carboxymethyl chitosan.
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DOI：
10.1016/j.carbpol.2012.07.014
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发表时间：
2012-11
影响因子：
11.2
通讯作者：
Bo Liu;Xiaoying Wang;Xiaoyun Li;Xianjie Zeng;R. Sun;J. Kennedy
中科院分区：
文献类型：
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作者：
Bo Liu;Xiaoying Wang;Xiaoyun Li;Xianjie Zeng;R. Sun;J. Kennedy
在不添加任何增塑剂的条件下，采用微波辐射法制备了剥离型羧甲基壳聚糖/累托石（QCMC/REC）纳米复合材料。XRD、TEM、AFM、SEM和FTIR结果表明，当QCMC与REC的质量比不小于4：1时，REC的硅酸盐层在QCMC基体中完全剥离，且与QCMC均匀，QCMC/REC纳米生物复合材料表面非常光滑; QCMC/REC纳米生物复合材料中存在氢键和静电引力两种类型的相互作用。热分析表明，QCMC/REC纳米生物复合材料比单一QCMC具有更高的热稳定性。因此，微波辐射法似乎是一个很有前途的工具，在温和的条件下制备剥离的生物聚合物/层状硅酸盐纳米复合材料。
Exfoliated quaternized carboxymethyl chitosan/rectorite (QCMC/REC) nanocomposite was prepared via microwave irradiation method for 70min, which was performed in only water without any additional plasticizer. XRD, TEM, AFM, SEM and FTIR results revealed that when the mass ratio of QCMC to REC was no less than 4:1, the silicate layers of REC were completely exfoliated in QCMC matrix and were homogenous with QCMC, the surface of QCMC/REC nanobiocomposite was very smooth; two types of interactions of hydrogen bond and electrostatic attraction existed in the QCMC/REC nanobiocomposite. Thermal analysis indicated that QCMC/REC nanobiocomposite had higher thermal stability than only QCMC. Therefore, the microwave irradiation method appears to be a promising tool for preparing exfoliated biopolymer/layered silicate nanocomposites at a mild condition.