Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (04): 10-14.doi: 10.13475/j.fzxb.20210303906

• Fiber Materials • Previous Articles     Next Articles

Structure and performances of Yunnan wild fireweed fiber and its fibrous network

YU Yan1, WANG Xichao1, ZHANG Ruiyun1,2(), LI Rongli3, CHENG Longdi1,2   

  1. 1. Key Laboratory of Textile Science & Technology, Ministry of Education, Donghua University, Shanghai 201620, China
    2. Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
    3. Kunming Jiuyong Ethnic Culture Creative Products Co., Ltd., Kunming, Yunnan 650000, China
  • Received:2021-03-10 Revised:2021-09-28 Online:2022-04-15 Published:2022-04-20
  • Contact: ZHANG Ruiyun E-mail:ryzhang@dhu.edu.cn

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Abstract:

The ancient fireweed textile technology for obtaining textile fibers is a cultural heritage of ethnic minorities. In order to study systematically the fiber and realize its popularization and application in the textile field, the basic structure and properties of wild fireweed fiber of Yunnan area and its network stripped from the back by hand were characterized by experiments. The studies show that the diameter of fireweed fiber is 1.05-5.76 μm, and it belongs to microfiber category. The longitudinal morphology of the fiber is characteristic of banded curvature, with folds and grooves on the surface, and the cross section is irregular elliptic with a cavity structure. The main components of the fiber are cellulose and hemicellulose with crystallinity of 55.52%. The thermal decomposition temperature of the fiber is 240 ℃, which has a good heat resistance. The content of lipid and wax is 6%, and the wetting angle with water is about 129.5° with good water-repellent ability. The moisture regain rate of the fiber is 11.69% and the moisture containing capacity is 10.47%, which is higher than that of cotton. Fireweed fiber has good resistance to acid and alkali at normal temperature, and the pH value of fiber water extract is 7.23, which is friendly to human skin.

Key words: fireweed fiber, microfiber, Gerbera delavayi, fireweed fibrous network, structural characterization, thermal material

CLC Number: 

  • TS102.2

Fig.1

Back of fireweed leaf (a) and fibrous network (b)"

Fig.2

SEM image of fireweed fibrous network(×200)"

Fig.3

Longitudinal morphology of fireweed fibers. (a) Longitudinal banded curvature structure(×3 000); (b) Surface pleats structure(×10 000)"

Fig.4

SEM image of cross section of fireweed fiber(×5 000)"

Tab.1

Morphological comparison of fireweed fiber and cotton fiber"

纤维 直径/μm 长度/mm 转曲
火草纤维 1.05~5.76 2~6 有
成熟细绒棉 18~25 23~33 有

Fig.5

Infrared absorption spectra of fireweed fibrous network"

Fig.6

XRD pattern of fireweed fibrous network"

Fig.7

TG curve of fireweed fibrous network"

Fig.8

Contact angle of fireweed fibrous network with water"

Tab.2

Acid-base resistance property and wettability of fireweed fiber with different dissolution time"

试剂名称 耐酸碱性 浸润性
10 min 20 min 30 min
火草 棉 火草 棉 火草 棉
98%硫酸 S S S S S S
75%硫酸 I P P S P S
60%硫酸 I I I I I I 不浸润
80%甲酸 I I I I I I 浸润并快速扩散
40%盐酸 I I I I I I 不浸润
冰乙酸 I I I I I I 浸润并快速扩散
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