Citation: Zhi-liang Wang, Jia-li Xu, Lian-jia Wu, Xin Chen, Shu-guang Yang, Hui-chao Liu, Xian-ju Zhou. Dissolution, Hydrolysis and Crystallization Behavior of Polyamide 6 in Superheated Water[J]. Chinese Journal of Polymer Science, ;2015, 33(9): 1334-1343. doi: 10.1007/s10118-015-1682-3 shu

Dissolution, Hydrolysis and Crystallization Behavior of Polyamide 6 in Superheated Water

Received Date: 14 February 2015
Revised Date: 25 April 2015

Fund Project: This work was financially supported by the National Natural Science Foundation of China (No. 51373032), Innovation Program of Shanghai Municipal Education Commission, Fundamental Research Funds for the Central University and DHU Distinguished Young Professor Program. Z.W. thanks the support from Chinese Universities Scientific Fund (No. CUSF-DH-D-2014025).

The dissolution, crystallization and hydrolysis behaviors of polyamide 6 (PA 6) in superheated water (140 ℃ TH 200 ℃) are investigated. The hydrothermal processing of PA 6 can be divided into four regions: (I) TH 140 ℃, (II) 140 ℃ TH 155 ℃, (III) 155 ℃ TH 160 ℃ and (IV) TH 160 ℃. Below 140 ℃, the hydrothermal processing does not have obvious impact on PA 6. Between 140 ℃ and 155 ℃, an annealing effect is observed that the hydrothermally treated resin shows increased melting temperature and lamellar thickness compared with the original PA 6. Between 155 ℃ and 160 ℃, the hydrothermal processing induces both annealing and surface swelling. Above 160 ℃, PA 6 dissolves fully in the superheated water. As PA 6 dissolves in the superheated water, hydrolysis takes place and becomes more prominent at higher temperatures and longer processing time. The hydrolysis induced molecular weight decrease fits an exponential decay.
- Nylon 6,
- Superheated water,
- Annealing,
- Crystallization,
- Hydrolysis
1. [1]
2. [2]
3. [3]
4. [4]
5. [5]
6. [6]
7. [7]
8. [8]
9. [9]
10. [10]
11. [11]
12. [12]
13. [13]
14. [14]
15. [15]
16. [16]
17. [17]
18. [18]
19. [19]
20. [20]
21. [21]
22. [22]
23. [23]
24. [24]
25. [25]
26. [26]
27. [27]
28. [28]
29. [29]
30. [30]
31. [31]
32. [32]
33. [33]
34. [34]
35. [35]
36. [36]
37. [37]
38. [38]
39. [39]
1. [1]
  Yarui Li , Huangjie Lu , Yingzhe Du , Jie Qiu , Peng Lin , Jian Lin . Highly efficient separation of high-valent actinide ions from lanthanides via fractional crystallization. Chinese Journal of Structural Chemistry, 2025, 44(4): 100562-100562. doi: 10.1016/j.cjsc.2025.100562
2. [2]
  Xian-Fa Jiang , Chongyun Shao , Zhongwen Ouyang , Zhao-Bo Hu , Zhenxing Wang , You Song . Generating electron spin qubit in metal-organic frameworks via spontaneous hydrolysis. Chinese Chemical Letters, 2024, 35(7): 109011-. doi: 10.1016/j.cclet.2023.109011
3. [3]
  Lanjun Cheng , Xinyuan Wang , Jie An , Xiang Wu , Chengfeng Zhu , Yanming Fu , Yougui Li . Improvement of the Resolution Experiment of Racemic Tartaric Acid. University Chemistry, 2025, 40(7): 277-285. doi: 10.12461/PKU.DXHX202408010
4. [4]
  Jun Lu , Jinrui Yan , Yaohao Guo , Junjie Qiu , Shuangliang Zhao , Bo Bao . Controlling solid form and crystal habit of triphenylmethanol by antisolvent crystallization in a microfluidic device. Chinese Chemical Letters, 2024, 35(4): 108876-. doi: 10.1016/j.cclet.2023.108876
5. [5]
  Xia-Lin Dai , Yu-Hang Yao , Jian-Feng Zhen , Wei Gao , Jia-Mei Chen , Tong-Bu Lu . Reaction crystallization method based on deep eutectic solvents: A novel, green and efficient cocrystal synthesis approach. Chinese Chemical Letters, 2025, 36(11): 110413-. doi: 10.1016/j.cclet.2024.110413
6. [6]
  Bin Dong , Ning Yu , Qiu-Yue Wang , Jing-Ke Ren , Xin-Yu Zhang , Zhi-Jie Zhang , Ruo-Yao Fan , Da-Peng Liu , Yong-Ming Chai . Double active sites promoting hydrogen evolution activity and stability of CoRuOH/Co₂P by rapid hydrolysis. Chinese Chemical Letters, 2024, 35(7): 109221-. doi: 10.1016/j.cclet.2023.109221
7. [7]
  Qian Liu , Yi Shi , Kaiya Wang , Xiao-Yu Hu . Tailoring cascade hydrolysis and cyclization efficiency in confined spaces via spatial and electrostatic regulation. Chinese Chemical Letters, 2025, 36(12): 111462-. doi: 10.1016/j.cclet.2025.111462
8. [8]
  Yuexiang Liu , Xiangqiao Yang , Tong Lin , Guantian Yang , Xiaoyong Xu , Bubing Zeng , Zhong Li , Weiping Zhu , Xuhong Qian . Efficient continuous synthesis of 2-[3-(trifluoromethyl)phenyl]malonic acid, a key intermediate of Triflumezopyrim, coupling with esterification-condensation-hydrolysis. Chinese Chemical Letters, 2025, 36(1): 109747-. doi: 10.1016/j.cclet.2024.109747
9. [9]
  Dian-Xue Ma , Yu-Wu Zhong . Achieving highly-efficient room-temperature phosphorescence with a nylon matrix. Chinese Journal of Structural Chemistry, 2024, 43(9): 100391-100391. doi: 10.1016/j.cjsc.2024.100391
10. [10]
  Shuai Liu , Wen Wu , Peili Zhang , Yunxuan Ding , Chang Liu , Yu Shan , Ke Fan , Fusheng Li . Mechanistic insights into acidic water oxidation by Mn(2,2′-bipyridine-6,6′-dicarboxylate)-based hydrogen-bonded organic frameworks. Chinese Journal of Structural Chemistry, 2025, 44(3): 100535-100535. doi: 10.1016/j.cjsc.2025.100535
11. [11]
  Zhenguo Zhang , Lanyang Li , Xinlong Zong , Yongheng Lv , Shuanglei Liu , Liang Ji , Xuefei Zhao , Zhenhua Jia , Teck-Peng Loh . "Water" accelerated B(C₆F₅)₃-catalyzed Mukaiyama-aldol reaction: Outer-sphere activation model. Chinese Chemical Letters, 2025, 36(7): 110504-. doi: 10.1016/j.cclet.2024.110504
12. [12]
  Chenxi Shang , Boxuan Lu , Chongbei Wu , Shuqing Zhou , Luyan Shi , Tayirjan Taylor Isimjan , Xiulin Yang . Inducing electronic rearrangement through Co₃B-Mo₂B₅ catalysts: Efficient dual-function catalysis for NaBH₄ hydrolysis and 4-nitrophenol reduction. Chinese Chemical Letters, 2025, 36(9): 111152-. doi: 10.1016/j.cclet.2025.111152
13. [13]
  Fang-Yuan Chen , Wen-Chao Geng , Kang Cai , Dong-Sheng Guo . Molecular recognition of cyclophanes in water. Chinese Chemical Letters, 2024, 35(5): 109161-. doi: 10.1016/j.cclet.2023.109161
14. [14]
  Yupeng TANG , Haiying YANG , Fan JIN , Nan LI . Hydrogen storage properties of C₆S₆Li₆: A density functional theory study. Chinese Journal of Inorganic Chemistry, 2025, 41(9): 1827-1839. doi: 10.11862/CJIC.20240460
15. [15]
  Xue-Wen Wu , Bin-Bao Wang , Yu Qin , Yong-Xiang Huang , Muhammad Aurang Zeb , Bin Cheng , Xiao-Li Li , Chang-Bo Zheng , Wei-Lie Xiao . Diterpenoids with unexpected 5/6/6-fused ring system and its dimer from Strophioblachia glandulosa. Chinese Chemical Letters, 2025, 36(8): 110584-. doi: 10.1016/j.cclet.2024.110584
16. [16]
  Hanqi Zhang , Biao Gao , Yuanyuan Feng , Guijuan Zheng , Zhijun Liu , Lichun Kong , Junjun Liu , Haji Akber Aisa , Guangmin Yao . DFT calculations and dynamic NMR revealed the coalescent NMR phenomena of the 6/6/6/9 tetracyclic merosesquiterpenoids with an unprecedented 9,15-dioxatetracyclo[8.5.3.0^4,17.0^14,18]octadecane core skeleton. Chinese Chemical Letters, 2025, 36(9): 111234-. doi: 10.1016/j.cclet.2025.111234
17. [17]
  Kun Tang , Yu-Wu Zhong . Water reduction by an organic single-chromophore photocatalyst. Chinese Journal of Structural Chemistry, 2024, 43(8): 100376-100376. doi: 10.1016/j.cjsc.2024.100376
18. [18]
  . . University Chemistry, 2024, 39(6): 0-0.
19. [19]
  . Cover and Table of Contents for Vol.41 No. 6. Acta Physico-Chimica Sinica, 2025, 41(6): -.
20. [20]
  . 第40卷第6期封面和目次. University Chemistry, 2025, 40(6): 0-0.

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(1266)
HTML views(60)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142