热重分析
马来酸酐
热稳定性
材料科学
延伸率
接触角
傅里叶变换红外光谱
卡拉胶
脱水
高分子化学
化学工程
表征(材料科学)
核化学
复合材料
极限抗拉强度
化学
聚合物
纳米技术
共聚物
工程类
生物化学
作者
Yuan Zhou,Fuquan Chen,Si Chen,Qiong Xiao,Han‐Rong Weng,Qing Yang,Anfeng Xiao
出处
期刊:Marine Drugs
[MDPI AG]
日期:2021-08-26
卷期号:19 (9): 486-486
被引量:10
摘要
In this work, the physicochemical properties of maleic anhydride (MAH)-modified κ-carrageenan (κCar) (MC) were characterized and compared with those of native κ-carrageenan (NC). The Fourier transform infrared spectrum of MC exhibited that κCar was successfully modified. Thermogravimetric analysis indicated that the thermal stability of MC was decreased. When the degree of substitution was 0.032, MC exhibited a low gel strength (759 g/cm2), gelling temperature (33.3 °C), and dehydration rate (60.3%). Given the excellent film-forming ability of κCar, MC films were then prepared and were found to have better mechanical and barrier properties (UV and water) than NC films. With regard to optical properties, MC films could completely absorb UV light in the range of 200-236 nm. The water contact angle of MC films was higher than that of NC films. Moreover, the elongation at break increased from 26.9% to 163%. These physicochemical property changes imply that MC can be employed in polysaccharide-based films.
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