林业工程学报2017，Vol.2Issue(5)：90-94,5.DOI:10.13360/j.issn.2096-1359.2017.05.016
纳米化竹粉/羧甲基纤维素复合膜材料制备及性能研究
Preparation and properties of bamboo nano powder /carboxymethyl cellulose composite film
摘要
Abstract
Nanocrystalline cellulose is renewable and biodegradable, also has excellent mechanical properties. It can be used as the reinforcing material for various polymer matrix and has broad application prospects. Carboxymethyl cellu-lose (CMC) is one of the important derivatives of cellulose and has been widely used as food packaging materials due to its biological activities. Bamboo is a fast grow plant and widely distributed source. In this paper, bamboo powder was treated by chloroacetic acid as an etherification agent. Water-soluble bamboo nano powder ( NB) was then isolated after the treatment. The morphology of the resulting NB obtained by scanning electron microscopy indicated that the NB is granular with the size about 50 nm. The NB/ CMC composited film was prepared by casting method and characterized by X ray diffraction, electronic universal testing machine, scanning electron microscope, and infrared spectrometer to investigate its structure, morphology, moisture absorption and mechanical properties. It was found that when the volume fraction of the NB and CMC increased from 0% to 20%, the elastic modulus of the composite film increased from 2397 MPa to 3932 MPa, while the elongation at break decreased. When the volume fraction of the NB was higher than 20%, the mechanical properties of the composite film decreased. The results indicate that the bamboo nano powder can improve the mechanical properties and reduce the moisture absorption of the composite film, which makes it a candidate as an additive for the preparation of packing materials.关键词
纳米材料/羧甲基纤维素/复合膜/机械性能/吸潮性Key words
nano-materials/carboxymethyl cellulose/composite film/mechanical property/water absorption分类
通用工业技术引用本文复制引用
丁婷婷,李倩,金贞福,葛志伟,陆伟苗..纳米化竹粉/羧甲基纤维素复合膜材料制备及性能研究[J].林业工程学报,2017,2(5):90-94,5.基金项目
国家自然科学基金(31670597,51603189) （31670597,51603189）
浙江省大学生科技创新活动计划(新苗人才计划)项目(2016R412046) （新苗人才计划）
科技部中日双边合作项目(2016YFE0125800) （2016YFE0125800）
浙江省林化产品制造产业团队项目(2013TD17) （2013TD17）
浙江省青年基金 (LQ14C160004). （LQ14C160004）
