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Title of Journal: Cellulose

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Abbravation: Cellulose

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Springer Netherlands

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DOI

10.1007/bf00177656

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ISSN

1572-882X

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Dyeing performances of ramie fabrics modified with

Authors: GuoWei Wang Bin Chen LingHua Zhuang Kang Yun JiaRong Guo Yan Wang Bin Xu
Publish Date: 2015/01/24
Volume: 22, Issue: 2, Pages: 1401-1414
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Abstract

An aminoterminated aliphatic hyperbranched polymer HBPNH2 was used to modify ramie fabric The molecular weight of HBPNH2 was established by GPC HBPNH2 structure might represent as BA4BA3BA3 third generation The total amine value secondary amine value and primary amine value of HBPNH2 were 29159 21014 and 8145 mg/g respectively with hydrochloric acid—ethanol titration method The unmodified and modified ramie fabrics were characterized by XRD and FESEM XRD results showed a transformation of crystalline structure from ramie cellulose I to cellulose II allomorph during mercerization and epichlorohydrin modification and the crystalline structure of cellulose II maintained with obvious crystallinity index increase after HBPNH2 modification Nitrogen content of HBPNH2 modified fabrics were 125–261  Cationization degree DC of HBPNH2 modified ramie fabrics were 441–940  CI Reactive Red 2 was applied to study the dyeing performance of modified fabrics The modification parameters were optimized as 50 °C for 5 h when the concentration of HBPNH2 was 8 g/L K/S value and dye uptake of modified fabric was 2364 and 856  respectively under optimal modification conditions The washing rubbing and light fastness of modified ramie fabrics were acceptable The tensile strength and tear strength of HBPNH2 modified ramie fabrics were lower than those of unmodified fabrics The warp weft of tensile and tear strength retention of modified fabrics were between 8523 and 8750  The HBPNH2 modification mechanism and dyeing mechanism on ramie fabric were suggestedThis work was supported by Natural Science Foundation of Jiangsu Province No BK2011799 No 20140939 and the specialized research fund for the Doctoral Program of Higher Education of China No 20113221120006 The authors also gratefully appreciate the support from Jiangsu Overseas Research Training Program for University Prominent Young Middleaged Teachers and Presidents and Jiangsu Students Innovation and Entrepreneurship Training Program No 2012JSSPITP3054 and No 201413905004Y

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