废旧涤纶/棉混纺军训服的化学分离回收

doi:10.13475/j.fzxb.20210910608

纺织学报 ›› 2022, Vol. 43 ›› Issue (01): 178-185.doi: 10.13475/j.fzxb.20210910608

废旧涤纶/棉混纺军训服的化学分离回收

董爽¹, 孔昱萤¹, 关晋平¹^,²(), 程献伟¹^,², 陈国强¹^,²

1.苏州大学纺织与服装工程学院, 江苏苏州 215021
2.现代丝绸国家工程实验室, 江苏苏州 215021

收稿日期:2021-09-27 修回日期:2021-11-01 出版日期:2022-01-15 发布日期:2022-01-28
通讯作者: 关晋平
作者简介:董爽(1997—),男,硕士生。主要研究方向为纺织品可持续染整技术。
基金资助:
盛虹·应急保障与公共安全用纤维材料及其制品科研攻关项目(2021-fx020201);纺织行业纺织材料阻燃整理重点实验室项目(Q811580421)

Chemical separation and recycling of waste polyester/cotton blended military training uniforms

DONG Shuang¹, KONG Yuying¹, GUAN Jinping¹^,²(), CHENG Xianwei¹^,², CHEN Guoqiang¹^,²

1. College of Textile and Clothing Engineering, Soochow University, Suzhou, Jiangsu 215021, China
2. National Engineering Laboratory for Modern Silk, Suzhou, Jiangsu 215021, China

Received:2021-09-27 Revised:2021-11-01 Published:2022-01-15 Online:2022-01-28
Contact: GUAN Jinping

摘要/Abstract

摘要：

针对军训服每年产生大量的废弃,造成原料涤纶/棉混纺织物浪费的状况,将醋酸锌、尿素、尿素-醋酸锌共晶体系作为催化剂,通过乙二醇醇解法对废旧涤纶/棉混纺军训服中的涤纶组分进行解聚回收,并通过酸解法对棉纤维素组分进行回收;研究了催化剂种类、催化剂用量、反应温度和时间对废旧涤纶/棉混纺军训服、白色涤纶/棉混纺织物、白色涤纶织物醇解的影响;最后采用红外光谱仪、核磁共振波谱仪、差示扫描量热仪对醇解得到的对苯二甲酸乙二醇酯单体及酸解纤维素进行表征。结果表明:选用醋酸锌作为催化剂,催化剂相对用量为0.6%,反应固液比为1∶6,在196 ℃条件下醇解3 h效果较好;硫酸酸解过滤得到白色纤维素,达到对废旧军训服不同组分分离回收的目的。

关键词: 军训服, 涤纶/棉混纺织物, 废旧纺织品, 醇解, 化学分离, 回收

Abstract:

Polyester/cotton blended fabrics are widely used for military training uniforms and civilian military training uniforms. However, the military training uniforms, form a large amount of waste every year, leading to heavy waste of resources. This paper reports the alcoholysis of polyester from the polyester/cotton blended military training uniforms with zinc acetate, urea, and urea-zinc acetate eutectic system as catalysts, where the cellulose was also recycled through this acid hydrolysis. The influence of the catalyst type and dosage, and the reaction temperature and time on the alcoholysis efficiency of polyester was explored. Three different waste textiles containing polyester were used. The alcoholysis polyethene terephthalate(BHET) monomer and acidolysis cellulose were characterized using the fourier transform infrared, nuclear magnetic resonance, differential scanning calorimetry analyses. The results show that the polyester has good alcoholysis efficiency under the following conditions: zinc acetate as the catalyst, the relative mass fraction of waste military training uniforms was 0.6%, the reaction solid-liquid ratio was 1∶6, the reaction temperature was 196 ℃, and the reaction time was 3 h. White cellulose was obtained and the goal of separating and recycling different components of waste military training uniforms was achieved.

Key words: military training uniforms, polyester/cotton blended fabric, waste textiles, alcoholysis, chemical separation, recycling

中图分类号:

TQ342.21

董爽, 孔昱萤, 关晋平, 程献伟, 陈国强. 废旧涤纶/棉混纺军训服的化学分离回收[J]. 纺织学报, 2022, 43(01): 178-185.

DONG Shuang, KONG Yuying, GUAN Jinping, CHENG Xianwei, CHEN Guoqiang. Chemical separation and recycling of waste polyester/cotton blended military training uniforms[J]. Journal of Textile Research, 2022, 43(01): 178-185.

图/表 14

表1

表2

表3

表4

表5

图1

图2

表6

表7

图3

图4

图5

图6

图7

参考文献 16

[1]	ZENG B, WANG X, BYRNE N. Cellulose beads derived from waste textiles for drug delivery[J]. Polymers, 2020, 12(7): 1621. doi: 10.3390/polym12071621
[2]	战登瑞. 涤棉锦和涤棉混纺织物对军服服用性能的探讨[J]. 北京纺织, 1985(4): 25-31.
	ZHAN Dengrui. Discussion on the wearability of military uniforms with polyester/cotton/nylon and polyester/cotton blended fabrics[J]. Beijing Textile, 1985(4): 25-31.
[3]	周长胜, 许俊明, 刘壮洪, 等. 针织面料在军服中的应用[J]. 针织工业, 2019(8): 10-13.
	ZHOU Changsheng, XU Junming, LIU Hongzhuang, et al. Application of knitted fabrics in military uniforms[J]. Knitting Industries, 2019(8): 10-13.
[4]	李刚, 谢先达, 夏应. 浅谈军服收旧利用[J]. 军事经济研究, 2010, 31(5): 60-61.
	LI Gang, XIE Xianda, XIA Ying. Talking about the collection and utilization of military uniforms[J]. Military Economic Research, 2010, 31(5): 60-61.
[5]	赵明宇. 废弃涤棉纺织品组分分离及再利用技术[D]. 北京:北京服装学院, 2015:9-14.
	ZHAO Mingyu. The dissociating of polyester/cotton biend fabrics and reuse of cotton textiles[D]. Beijing: Beijing Institute of Fashion Technology, 2015:9-14.
[6]	LÓPEZ-FONSECA R, DUQUE-INGUNZA I, DERIVAS B, et al. Chemical recycling of post-consumer PET wastes by glycolysis in the presence of metal salts[J]. Polymer Degradation and Stability, 2010, 95(6): 1022-1028. doi: 10.1016/j.polymdegradstab.2010.03.007
[7]	WANG Q, YAO X, TANG S, et al. Urea as an efficient and reusable catalyst for the glycolysis of poly (ethylene terephthalate) wastes and the role of hydrogen bond in this process[J]. Green Chemistry, 2012, 14(9): 2559-2566. doi: 10.1039/c2gc35696a
[8]	WANG Q, YAO X, GENG Y, et al. Deep eutectic solvents as highly active catalysts for the fast and mild glycolysis of poly (ethylene terephthalate)(PET)[J]. Green Chemistry, 2015, 17(4): 2473-2479. doi: 10.1039/C4GC02401J
[9]	吕媛媛. 聚酯醇解、酯交换机理的探究及再生聚酯的合成[D]. 上海:东华大学, 2020:12-13.
	LÜ Yuanyuan. Study on glycolysis, mechanism of transesterification of polyester and synthesis of recycled polyester[D]. Shanghai: Donghua University, 2020:12-13.
[10]	姚浩余. PET醇解协同催化体系的构建及反应机理研究[D]. 北京:中国科学院大学过程工程研究所, 2021:14-15.
	YAO Haoyu. Study on the construction of synergistic catalysis system and reaction mechanism for PET catalytic alcoholysis[D]. Beijing: Institute of Process Engineering, University of Chinese Academy of Sciences, 2021:14-15.
[11]	CHEN C H, CHEN C Y, LO Y W, et al. Studies of glycolysis of poly (ethylene terephthalate) recycled from postconsumer soft-drink bottles: I: influences of glycolysis conditions[J]. Journal of Applied Polymer Science, 2001, 80(7): 943-948. doi: 10.1002/(ISSN)1097-4628
[12]	IKLADIOUS N E. Recycling of poly (ethylene terephthalate): identification of glycolysis products[J]. Journal of Elastomers & Plastics, 2000, 32(2): 140-151.
[13]	KÁRPÁTI L, FOGARASSY F, KOVÁCSIK D, et al. One-pot depolymerization and polycondensation of PET based random oligo-and polyesters[J]. Journal of Polymers and the Environment, 2019, 27(10): 2167-2181. doi: 10.1007/s10924-019-01490-3
[14]	王伟. 涤棉纺织品的醇解聚合及共聚改性[D]. 上海:东华大学, 2017:19-20.
	WANG Wei. Alcoholysis and polymerization of the polyester-cotton fabric and its co-polymerization modification[D]. Shanghai: Donghua University, 2017:19-20.
[15]	王少博. PET聚酯的乙二醇解聚与再生共聚研究[D]. 上海:东华大学, 2016:42-43.
	WANG Shaobo. Study on the poly(ethylene terephthalate) recycling via glycolysis and copolycondensation[D]. Shanghai: Donghua University, 2016:42-43.
[16]	LING Z, WANG T, MAKAREM M, et al. Effects of ball milling on the structure of cotton cellulose[J]. Cellulose, 2019, 26(1): 305-328. doi: 10.1007/s10570-018-02230-x

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

催化剂种类	聚酯转化率/%	BHET选择性/%
尿素体系	19.08±0.21	3.69±0.32
醋酸锌体系	87.39±0.23	54.46±0.25
尿素-醋酸锌共晶体系	63.69±0.30	39.08±0.31

反应温度/℃	聚酯转化率/%	BHET选择性/%
145	22.46±0.24	9.84±0.21
170	69.54±0.22	58.15±0.25
196	92.43±0.15	85.66±0.13
220	58.71±0.21	50.22±0.29

醋酸锌用量/%	聚酯转化率/%	BHET选择性/%
0.0	14.77±0.24	2.46±0.22
0.2	93.23±0.21	71.08±0.24
0.4	88.31±0.23	75.69±0.22
0.6	92.43±0.24	85.66±0.20
0.8	87.88±0.25	81.35±0.24
1.0	96.06±0.19	75.02±0.23

时间/h	聚酯转化率/%	BHET选择性/%
1	57.85±0.22	40.89±0.22
2	72.49±0.23	54.71±0.30
3	92.43±0.25	85.66±0.21
4	87.17±0.20	60.46±0.22

醇解底物	聚酯转化率/%	BHET选择性/%
废旧涤纶/棉混纺军训服	93.23±0.15	71.08±0.13
白色纯涤纶织物	86.4±0.20	58.46±0.21
白色涤纶/棉混纺织物	95.69±0.23	74.77±0.18
酸解后废旧涤纶/棉混纺军训服	57.85±0.30	3.08±0.35

废旧涤纶/棉混纺军训服的化学分离回收

Chemical separation and recycling of waste polyester/cotton blended military training uniforms

RichHTML

PDF (PC)

摘要/Abstract

引用本文

使用本文

图/表 14

参考文献 16

相关文章 15

Metrics

本文评价

推荐阅读 10

醇解底物	化学位移	裂分数目	偶合常数 J/Hz	氢核数目
废旧涤纶/棉混纺军训服	8.13	单峰(s)	—	2
	4.97	三重峰(t)	5.7	1
	4.37~4.30	多重峰(m)	—	2
	3.74	四重峰(q)	5.3	2
白色涤纶/棉混纺织物	8.16	单峰(s)	—	2
	5.00	三重峰(t)	5.6	1
	4.37	三重峰(t)	4.9	2
	3.77	四重峰(q)	5.3	2
白色纯涤纶织物	8.12	单峰(s)	—	2
	4.96	三重峰(t)	5.7	1
	4.36~4.29	多重峰(m)	—	2
	3.77~3.69	多重峰(m)	—	2

醇解底物	化学位移
废旧涤纶/棉混纺军训服	165.63
	134.21
	129.97
	67.48
	59.46
白色涤纶/棉混纺织物	165.63
	134.22
	129.97
	67.49
	59.46
白色纯涤纶织物	165.63
	134.21
	129.97
	67.49
	59.46

[1]	李珍珍, 支超, 余灵婕, 朱海, 杜明娟. 废棉再生气凝胶/经编间隔织物复合材料的制备及其性能[J]. 纺织学报, 2022, 43(01): 167-171.
[2]	唐政坤, 刘艳缤, 徐晨烨, 刘艳彪, 沈忱思, 李方, 王华平. 面向减污降碳目标的纺织工业环境治理发展趋势[J]. 纺织学报, 2022, 43(01): 131-140.
[3]	姜涛, 周丽, 王琳, 程伟钊, 周安展. 废旧衣物回收资源化利用典型模式及其环境绩效分析[J]. 纺织学报, 2022, 43(01): 186-192.
[4]	李博, 樊威, 高兴忠, 王淑娟, 李志虎. 碳纤维增强类玻璃环氧高分子复合材料闭环回收利用[J]. 纺织学报, 2022, 43(01): 15-20.
[5]	杨星, 李轻舟, 吴敏, 周永凯. 欧盟纺织产业链上的绿色循环及废旧纺织品处理关键问题[J]. 纺织学报, 2022, 43(01): 106-112.
[6]	韩非, 郎晨宏, 邱夷平. 废旧纺织品资源化循环利用研究进展[J]. 纺织学报, 2022, 43(01): 96-105.
[7]	高强, 王晓, 郭亚杰, 陈茹, 魏菊. 棉基Ti₃C₂T_x油水分离膜的制备及其性能[J]. 纺织学报, 2022, 43(01): 172-177.
[8]	钱淼, 胡恒蝶, 向忠, 马成章, 胡旭东. 非均布热管换热器的流动及其传热性能[J]. 纺织学报, 2021, 42(12): 151-158.
[9]	李艳艳, 李梦娟, 葛明桥. 有色废弃聚酯的脱色与再利用研究进展[J]. 纺织学报, 2021, 42(08): 17-23.
[10]	汪少朋, 吴宝宅, 何洲. 废旧纺织品回收与资源化再生利用技术进展[J]. 纺织学报, 2021, 42(08): 34-40.
[11]	杜欢政, 陆莎, 孙荐, 康乾. 生活源废旧纺织品高值化回收再利用体系的构建研究[J]. 纺织学报, 2021, 42(06): 1-7.
[12]	涂莉, 孟家光, 李欣, 李娟子. 废旧毛/丝/棉混纺面料的组分分析及其剥色工艺[J]. 纺织学报, 2019, 40(11): 75-80.
[13]	辛民岳, 郑强, 吴江丹, 梁列峰. 同轴静电纺多孔氧化锌薄膜制备及其光催化性能[J]. 纺织学报, 2019, 40(10): 42-47.
[14]	陈欣, 张家琳, 王纪冬, 李晓强, 葛明桥. 电絮凝技术在废弃涤纶醇解液脱色中的应用[J]. 纺织学报, 2019, 40(10): 98-104.
[15]	阮芳涛, 施建, 徐珍珍, 邢剑. 碳纤维增强树脂基复合材料的回收及其再利用研究进展[J]. 纺织学报, 2019, 40(06): 152-157.