食品科学2025，Vol.46Issue(9)：100-108,9.DOI:10.7506/spkx1002-6630-20240923-172
双醛淀粉交联纤维素纳米晶/油莎豆淀粉复合薄膜的制备及性能
Preparation and Properties of Dialdehyde Starch Crosslinked Cellulose Nanocrystal/Tiger Nut Starch Composite Film
摘要
Abstract
To address the poor extensibility of cellulose nanocrystal(CNC)/starch composite film,tiger nut starch(TNS),dialdehyde starch(DAS),and CNC were prepared from tiger nut meal and used to fabricate CNC/TNS composite films incorporated with different concentrations of DAS.The effects of different concentrations of DAS on the structure and properties of CNC/TNS composite films were investigated.The results showed that the characteristic peak corresponding to the aldehyde group appeared at 1 730 cm-1 in the Fourier transform infrared spectroscopy(FTIR).DAS exhibited an amorphous flake-like structure with a relative aldehyde content of 85.35％.The characteristic peak for aldehyde groups disappeared in the FTIR of the composite film,accompanied by a decrease in the hydroxyl absorption peak.The X-ray diffraction(XRD)pattern showed a reduction or disappearance of the crystallization peak corresponding to CNC,indicating that DAS was crosslinked with both CNC and TNS.After crosslinking,the intermolecular interactions in the composite films were enhanced,resulting in changes in the internal molecular structure and a 21.16％‒83.31％increase in elongation at break.The films with DAS concentrations of 0.2％and 1.0％showed improved compatibility between CNC and TNS,as well as reduced roughness and thickness,and the oxygen barrier capacity increased by 14.14％and 51.37％,respectively.These findings demonstrate that DAS,at an appropriate concentration,can significantly enhance the overall properties of CNC/starch composite film.关键词
双醛淀粉/交联/纤维素纳米晶/油莎豆淀粉/生物可降解薄膜Key words
dialdehyde starch/cross-linking/cellulose nanocrystal/tiger nut starch/biodegradable films分类
轻工纺织引用本文复制引用
何荣军,盖琳琳,朱洲谊,孙培龙..双醛淀粉交联纤维素纳米晶/油莎豆淀粉复合薄膜的制备及性能[J].食品科学,2025,46(9):100-108,9.基金项目
浙江省科技计划项目(2022C02063 （）
KYY-HX-20200317) （）
