摘要
为了降低苎麻纤维的结晶度,利用电子束对苎麻纤维进行了0–2000 kGy范围不同剂量的辐照,采用X射线衍射仪(XRD)和红外光谱(FT-IR)对辐照苎麻纤维进行了测试分析。X射线衍射图谱数字分峰分析得知苎麻纤维结晶度随辐照剂量增加而减小,红外光谱分析结晶度指数也随剂量增加而变小。且从红外光谱特征峰分析得知纤维中羰基组分随辐照剂量增加而升高。结果表明,利用电子束辐照可有效降低苎麻纤维的结晶度,而且可通过控制不同剂量的辐照得到苎麻纤维应用所需要的结晶度。
Background： Ramie fiber is a kind of natural polymer material with abundant resources and low price, which has been widely applied in textile. Ramie textiles possess many good qualities, such as air permeability, sweat conductivity and antibacterial ability, but the high crystallinity of ramie fiber gives rise to bad spinning property, small extensibility and low chromaticity which restrict its further application. Purpose： In order to reduce the crystallinity of ramie fiber, the electron beam was directly utilized to irradiate ramie fiber. Methods： Ramie fiber was irradiated by electrons with the irradiation doses from 0 to 2 000 kGy, and the irradiated ramie fiber was characterized by XRD and FT-IR. The crystallinity and the crystallinity index of ramie fiber were analyzed, and the irradiation effect was discussed. Results： The crystallinity and the crystallinity index of ramie fiber decrease with the increasing of irradiation doses and the number of-C = O increases with the increasing of irradiation doses. Conclusions： The variation behavior of the crystallinity and the crystallinity index of ramie fiber with electron irradiation dose ranging from 0 to 2 000 kGy is got. It is shown that the crystallinity and the crystallinity index of ramie fiber may be effectively reduced by using electron beams irradiation, but also the required crystallinity of ramie fiber in its application can be achieved by controlling the electron beams irradiation doses.
出处
《核技术》
CAS
CSCD
北大核心
2013年第7期26-30,共5页
Nuclear Techniques
基金
国家自然科学基金(10675023,11075018)课题
中央高校基本科研业务费专项资金资助
关键词
苎麻纤维
电子辐照
结晶度
Ramie fiber, Electron irradiation, Crystallinity
