摘要
以不同浓度NaOH在不同张力条件下处理竹原纤维纱线,再用乙二醛进行交联改性,对改性后纱线的结构和性能进行了表征。用XRD和FTIR研究了纱线的结晶结构。结果表明,松弛碱处理时,碱浓度为16%～18%,纤维的结晶结构变化最大,纤维素Ⅰ基本转变为纤维素Ⅱ,同时结晶度达到最小值,纤维回潮率提高。张力对纤维素的转化和结晶度的降低有阻碍作用。松弛碱处理则有利于扩大纤维的可及区,提高其交联程度,但纱线的强度下降显著;张力碱处理则有利于减少纱线交联后强度的损失。
Natural bamboo fiber yarns were treated with NaOH at various concentrations and tension, and subsequently crosslinked with glyoxal. The microstructure and properties of the treated yarns were studied and characterized using XRD and FTIR. Results showed that the maximum changes in the crystalline structure of fiber took place at 16%- 18% NaOH, which would almost transform cellulose Ⅰ to cellulose Ⅱ ,at the same time, the crystallinity index decreased to the minimum while the moisture regain were increased. The tension could restraint the degree of crystallinity decreasing and cellulose transformation. The alkali treatment without tension can enlarge the accessible regions in which the crosslinking reaction can proceed, but the strength loss of the yarns seriously; the alkali treatment with tension were beneficial to diminish the strength loss of yarns during the crosslinking treatment.
出处
《印染》
北大核心
2008年第4期1-5,共5页
China Dyeing and Finishing
关键词
染整
碱处理
交联
改性
纱线
竹纤维
dyeing and finishing
alkali treatment
crosslinking
modification
yarn
bamboo fiber
