一步法制备双醛基微纤化纤维素及其明胶复合膜

doi:10.16085/j.issn.1000-6613.2017-1022

化工进展 ›› 2018, Vol. 37 ›› Issue (04): 1522-1528.DOI: 10.16085/j.issn.1000-6613.2017-1022

一步法制备双醛基微纤化纤维素及其明胶复合膜

林凤采¹, 汪雪琴¹, 杨旋¹, 卢贝丽¹, 王思群^2,3, 黄彪¹, 林咏梅¹

1 福建农林大学材料工程学院, 福建福州 350108;
2 中国林业科学研究院木材工业研究所, 北京 100091;
3 美国田纳西大学可再生碳材料中心, 美国诺克斯维尔 37996

收稿日期:2017-05-31 修回日期:2017-12-05 出版日期:2018-04-05 发布日期:2018-04-05
通讯作者: 林咏梅,讲师,主要从事生物质功能材料的研究;黄彪,教授,主要从事植物纤维化学和炭材料的研究。
作者简介:林凤采(1990-),男,博士研究生。
基金资助:
林业公益性行科研专项（201504603）、国家自然科学基金（31370560，21402027）、福建省自然科学基金（2015J05046）及福建农林大学杰出青年科研人才计划（xjq201503）项目。

One-step synthesis of dialdehyde microfibrillated cellulose and its composite film with gelatin

LIN Fengcai¹, WANG Xueqin¹, YANG Xuan¹, LU Beili¹, WANG Siqun^2,3, HUANG Biao¹, LIN Yongmei¹

1 College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, Fujian, China;
2 Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China;
3 Center for Renewable Carbon, University of Tennessee, Knoxville 37996, USA

Received:2017-05-31 Revised:2017-12-05 Online:2018-04-05 Published:2018-04-05

摘要/Abstract

摘要： 以竹浆纤维为原料，基于机械力化学法，在高碘酸钠氧化下一步法制备双醛基微纤化纤微素（dialdehyde microfibrillated cellulose，D-MFC），再与明胶交联构筑基于席夫碱键的D-MFC/明胶复合膜。采用透射电子显微镜（TEM）、傅里叶变换红外光谱分析仪（FTIR）、扫描电子显微镜（SEM）、热分析仪（TGA）和质构仪等对D-MFC和D-MFC/明胶复合膜的官能团、形貌结构、热稳定性和力学性能等进行表征与分析。结果表明，机械力化学法制备的D-MFC直径在10~50nm，长度在微米级，醛基含量为0.237mmol/g。D-MFC在复合膜中具有良好的分散性，D-MFC上的醛基与明胶中的氨基发生反应，形成席夫碱键，从而提高复合膜的热稳定性、拒水性和力学性能。当D-MFC添加量为2.0g时，其拉伸强度可达189.1MPa，最大热失重速率温度为338℃，吸湿率降低至11.14%。采用机械力化学法制备D-MFC具有工艺简便、绿色环保的优点，该生物质复合膜在生物医用材料领域具有潜在的应用价值。

关键词: 机械力化学, 氧化, 微纤化纤维素, 生物质, 复合材料

Abstract: With bamboo pulp as the raw material and sodium periodate as the oxidant,dialdehyde microfibrillated cellulose(D-MFC) was prepared via a one-step reaction under mechanochemical conditions,and then crosslinked with gelatin to construct D-MFC/gelatin composite film based on the bond of Schiff base. The functional group,structural,morphological,thermo and mechanical properties of D-MFC and the composite film were studied using transmission electron microscopy(TEM),Fourier transformation infrared spectroscopy(FTIR),scanning electron microscopy(SEM),thermal gravimetric analyzer(TGA) and texture analyzer. The results indicated that the diameters of the obtained D-MFC ranged from 10nm to 50nm and the length was in micro level. In addition,the aldehyde content of D-MFC was determined to be 0.237mmol/g. The D-MFC particles could be well-dispersed in a composite film. The aldehyde group of the D-MFC could react with the amino group of gelatin to form a Schiff base which improved the thermal stability,water resistance and mechanical properties of the composite film. The tensile strength and the temperature corresponding to maximum weight loss of composite film with 2.0g D-MFC addition was determined to be 189.1MPa and 338℃,respectively,and the moisture content of composite film was reduced to 11.14%. This work provided a simple and environmentally benign approach to prepare dialdehyde microfibrillated cellulose and the D-MFC/gelatin composite film showed a great potential applications in the field of biomedical materials.

Key words: mechanochemical, oxidation, microfibrillated cellulose, biomass, composites

中图分类号:

TQ352

林凤采, 汪雪琴, 杨旋, 卢贝丽, 王思群, 黄彪, 林咏梅. 一步法制备双醛基微纤化纤维素及其明胶复合膜[J]. 化工进展, 2018, 37(04): 1522-1528.

LIN Fengcai, WANG Xueqin, YANG Xuan, LU Beili, WANG Siqun, HUANG Biao, LIN Yongmei. One-step synthesis of dialdehyde microfibrillated cellulose and its composite film with gelatin[J]. Chemical Industry and Engineering Progress, 2018, 37(04): 1522-1528.

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一步法制备双醛基微纤化纤维素及其明胶复合膜

One-step synthesis of dialdehyde microfibrillated cellulose and its composite film with gelatin

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