Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (05): 12-17.doi: 10.13475/j.fzxb.20180605906

• Fiber Materials • Previous Articles     Next Articles

Preparation and properties of poly(3-hydroxybutyrate-co-3-hydroxyl valerate)/polylactic acid flame retardant fibersMO

MO Dajie1, LI Xuming1,2(), XU Zenghui3   

  1. 1. College of Textile and Garment, Shaoxing University, Shaoxing, Zhejiang 312000, China
    2. Key Laboratory of Clean Dyeing and Finishing Technology, Shaoxing University, Shaoxing, Zhejiang 312000, China
    3. Jiangnan Branch, China Textile Academy, Shaoxing, Zhejiang 312071, China
  • Received:2018-06-20 Revised:2019-01-28 Online:2019-05-15 Published:2019-05-21
  • Contact: LI Xuming E-mail:lixm@usx.edu.cn

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Abstract:

In order to prepare the biodegradable fiber with flame retardant property, poly(3-hydroxybutyrate-co-3-hydroxyl valerate)(PHBV), poly(lactic acid)(PLA) and ammonium polyph osphate(APP) were melt blended, then PHBV/PLA/APP composite fiber was prepared by melt spinning. The thermal property, heat stability, tensile property and flame retardant properties of PHBV/PLA/APP composite fiber were tested. The results show that the addition of APP has no significant effect on the cool crystallization temperature and melting temperature of PHBV/PLA. With the increasing of APP mass fraction, thermal stability and carbon yield of PHBV/PLA composite are improved. With the increasing of draft ratio, the breaking strength of PHBV/PLA/APP composite fiber is enhanced. The breaking strength of PHBV/PLA/APP composite fiber is firstly increased then decreased with the addition of APP. When the APP mass fraction is 5%, the breaking strength reaches the peak value. Meanwhile, with the increasing of APP mass fraction, the flame retardant property of the composite fiber is improved. When the APP mass fraction is 10%, the flame retardant effect is optimum, the value of limit oxygen index is 32.3%, the flame retardant class is V-0, and no molten drop phenomenon occurs in burning process.

Key words: poly(3-hydroxybutyrate-co-3-hydroxyl valerate), polylactic acid, ammonium polyphosphate, melt spinning, mechanical property, flame retardant property

CLC Number: 

  • TS102.5

Fig.1

DSC heating curves of PHBV/PLA/APP composites"

Fig.2

TG(a) and DTG(b) curves of PHBV/PLA/APP composites"

Fig.3

Section surface morphologies of PHBV/PLA/APP composites with different APP contents (×500)"

Fig.4

Influence of draft ratio on breaking strength of PHBV/PLA/APP composite fibers"

Fig.5

Influence of APP content on tensile properties of PHBV/PLA/APP composite fibers"

Tab.1

Flame retardancy of PHBV/PLA/APP composites with different APP contents"

样品编号 LOI值/% UL94等级 有无熔滴
0# 23.6 V-2 有
1# 24.9 V-2 有
2# 28.5 V-1 有
3# 32.3 V-0 无
4# 32.7 V-0 无
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