Citation: Ting Yu, Jian-qiang Zhang, Ya Li, Su-dan Shen, Wen-feng Wei, Peng Chen, Zong-bao Wang, Qun Gu. SOLUTION CRYSTALLIZATION BEHAVIOR OF LINEAR AND STAR-SHAPED POLY(ETHYLENE GLYCOL)-b-POLY(-CAPROLACTONE) BLOCK COPOLYMERS[J]. Chinese Journal of Polymer Science, ;2013, 31(12): 1717-1724. doi: 10.1007/s10118-013-1365-x shu

SOLUTION CRYSTALLIZATION BEHAVIOR OF LINEAR AND STAR-SHAPED POLY(ETHYLENE GLYCOL)-b-POLY(-CAPROLACTONE) BLOCK COPOLYMERS

Ting Yu ¹ ,
Jian-qiang Zhang ^2,3,4 ,
Ya Li ^2,5,4 ,
Su-dan Shen ¹ ,
Wen-feng Wei ¹ ,
Peng Chen ¹ ,
Zong-bao Wang ¹ ,
Qun Gu ¹

1.
Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
2.
1. Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
3.
2. School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
4.
5.
2. Institute of Material Engineering, Ningbo University of Technology, Ningbo 315016, China

Received Date: 18 January 2013
Revised Date: 17 March 2013

Fund Project: This project was financially supported by the National Natural Science Foundation of China (Nos. 21004073 and 51003117), Zhejiang Province Innovative Research Team (No. 2009R50013), Ningbo Innovative Research Team (No. 2009B21008), Ningbo Key Lab of Polymer Materials (No. 2010A22001), Zhejiang Provincial Natural Science Foundation (No. Y4100517).

Lamellar crystals of diblock, triblock and four-arm poly(ethylene glycol)-b-poly(-caprolactone) (PEG-b-PCL) crystalline-crystalline copolymers were successfully obtained from their solution. Morphology and structure of lamellar crystals of crystalline-crystalline copolymers were investigated using tapping-mode atomic force microscopy (AFM) and selected area electron diffraction (SAED). All of these samples showed the truncated-lozenge multilayer basal shapes with central screw dislocation or central stack, which were all obtained simultaneously from the oil bath. The diffraction pattern of PEG block lamellar crystal is attributed to the (120) diffracting planes and the pattern of PCL block lamellar crystal is attributed to the (110) diffracting planes and (200) diffracting planes according to the SAED results. Four (110) crystal growth planes and two (200) crystal growth planes are discovered for the PCL blocks, but the (120) crystal growth planes of PEG blocks are hided in the figure of AFM. The crystalline structure of the four-arm copolymers (FA) is more disorder and confused than that of the diblock (DI) copolymer and the striated fold surface structures of lamellar crystals of four-arm copolymers (FA) are smoother than these of linear analogues, owing to the confused crystallization of blocks caused by the mutual restriction of blocks and the hindrance of the dendritic cores. In addition, the aspect ratio of FA is greater than that of the others. It is hypothesized that there are two reasons for the change of aspect ratios. First, the (200) diffracting planes of PCL crystals grew slowly compared to their (110) diffracting planes because of difference in the energy barrier. Secondly, edge dislocations on the (200) diffracting planes are also responsible for the variation of the aspect ratio. Consequently, the crystalline defects are augmented by the competing blocks crystallized simultaneously and the hindrance of the dendritic cores.
- Lamellar crystal,
- Topological structure,
- PEG-b-PCL,
- Edge dislocation,
- Aspect ratio
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]
1. [1]
  Peng Meng , Qian-Cheng Luo , Aidan Brock , Xiaodong Wang , Mahboobeh Shahbazi , Aaron Micallef , John McMurtrie , Dongchen Qi , Yan-Zhen Zheng , Jingsan Xu . Molar ratio induced crystal transformation from coordination complex to coordination polymers. Chinese Chemical Letters, 2024, 35(4): 108542-. doi: 10.1016/j.cclet.2023.108542
2. [2]
  Huirong Chen , Yingzhi He , Yan Han , Jianbo Hu , Jiantang Li , Yunjia Jiang , Basem Keshta , Lingyao Wang , Yuanbin Zhang . A new SIFSIX anion pillared cage MOF with crs topological structure for efficient C2H2/CO2 separation. Chinese Journal of Structural Chemistry, 2025, 44(2): 100508-100508. doi: 10.1016/j.cjsc.2024.100508
3. [3]
  Xiaofen GUAN , Yating LIU , Jia LI , Yiwen HU , Haiyuan DING , Yuanjing SHI , Zhiqiang WANG , Wenmin WANG . Synthesis, crystal structure, and DNA-binding of binuclear lanthanide complexes based on a multidentate Schiff base ligand. Chinese Journal of Inorganic Chemistry, 2024, 40(12): 2486-2496. doi: 10.11862/CJIC.20240122
4. [4]
  Yao HUANG , Yingshu WU , Zhichun BAO , Yue HUANG , Shangfeng TANG , Ruixue LIU , Yancheng LIU , Hong LIANG . Copper complexes of anthrahydrazone bearing pyridyl side chain: Synthesis, crystal structure, anticancer activity, and DNA binding. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 213-224. doi: 10.11862/CJIC.20240359
5. [5]
  Lulu DONG , Jie LIU , Hua YANG , Yupei FU , Hongli LIU , Xiaoli CHEN , Huali CUI , Lin LIU , Jijiang WANG . Synthesis, crystal structure, and fluorescence properties of Cd-based complex with pcu topology. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 809-820. doi: 10.11862/CJIC.20240171
6. [6]
  Jia JI , Zhaoyang GUO , Wenni LEI , Jiawei ZHENG , Haorong QIN , Jiahong YAN , Yinling HOU , Xiaoyan XIN , Wenmin WANG . Two dinuclear Gd(Ⅲ)-based complexes constructed by a multidentate diacylhydrazone ligand: Crystal structure, magnetocaloric effect, and biological activity. Chinese Journal of Inorganic Chemistry, 2025, 41(4): 761-772. doi: 10.11862/CJIC.20240344
7. [7]
  Lu LIU , Huijie WANG , Haitong WANG , Ying LI . Crystal structure of a two-dimensional Cd(Ⅱ) complex and its fluorescence recognition of p-nitrophenol, tetracycline, 2, 6-dichloro-4-nitroaniline. Chinese Journal of Inorganic Chemistry, 2024, 40(6): 1180-1188. doi: 10.11862/CJIC.20230489
8. [8]
  Zhaodong WANG . In situ synthesis, crystal structure, and magnetic characterization of a trinuclear copper complex based on a multi-substituted imidazo[1,5-a]pyrazine scaffold. Chinese Journal of Inorganic Chemistry, 2025, 41(3): 597-604. doi: 10.11862/CJIC.20240268
9. [9]
  Luyan Shi , Ke Zhu , Yuting Yang , Qinrui Liang , Qimin Peng , Shuqing Zhou , Tayirjan Taylor Isimjan , Xiulin Yang . Phytic acid-derivative Co₂B-CoPO_x coralloidal structure with delicate boron vacancy for enhanced hydrogen generation from sodium borohydride. Chinese Chemical Letters, 2024, 35(4): 109222-. doi: 10.1016/j.cclet.2023.109222
10. [10]
  Jiayi Guo , Liangxiong Ling , Qinwei Lu , Yi Zhou , Xubiao Luo , Yanbo Zhou . Degradation of chloroxylenol by CoS_x activated peroxomonosulfate: Role of cobalt-sulfur ratio. Chinese Chemical Letters, 2025, 36(4): 110380-. doi: 10.1016/j.cclet.2024.110380
11. [11]
  Yin-Hang Chai , Li-Long Dang . New structural breakthrough and topological transformation of homogeneous metalla[4]catenane compounds. Chinese Journal of Structural Chemistry, 2024, 43(10): 100322-100322. doi: 10.1016/j.cjsc.2024.100322
12. [12]
  Jing LIANG , Qian WANG , Junfeng BAI . Synthesis and structures of cdq-topological quaternary and (4, 4, 8)-c topological quinary Zn-MOFs with both oxalic acid and triazole ligands. Chinese Journal of Inorganic Chemistry, 2024, 40(11): 2186-2192. doi: 10.11862/CJIC.20240177
13. [13]
  Ya Song , Mingxia Zhou , Zhu Chen , Huali Nie , Jiao-Jing Shao , Guangmin Zhou . Integrated interconnected porous and lamellar structures realized fast ion/electron conductivity in high-performance lithium-sulfur batteries. Chinese Chemical Letters, 2024, 35(6): 109200-. doi: 10.1016/j.cclet.2023.109200
14. [14]
  Yun-Xin Huang , Lin-Qian Yu , Ke-Yu Chen , Hao Wang , Shou-Yan Zhao , Bao-Cheng Huang , Ren-Cun Jin . Biochar with self-doped N to activate peroxymonosulfate for bisphenol-A degradation via electron transfer mechanism: The active edge graphitic N site. Chinese Chemical Letters, 2024, 35(9): 109437-. doi: 10.1016/j.cclet.2023.109437
15. [15]
  Zhaohong Chen , Mengzhen Li , Jinfei Lan , Shengqian Hu , Xiaogang Chen . Organic ferroelastic enantiomers with high T_c and large dielectric switching ratio triggered by order-disorder and displacive phase transition. Chinese Chemical Letters, 2024, 35(10): 109548-. doi: 10.1016/j.cclet.2024.109548
16. [16]
  Zhiqiang Liu , Qiang Gao , Wei Shen , Meifeng Xu , Yunxin Li , Weilin Hou , Hai-Wei Shi , Yaozuo Yuan , Erwin Adams , Hian Kee Lee , Sheng Tang . Removal and fluorescence detection of antibiotics from wastewater by layered double oxides/metal-organic frameworks with different topological configurations. Chinese Chemical Letters, 2024, 35(8): 109338-. doi: 10.1016/j.cclet.2023.109338
17. [17]
  Jiakun Bai , Junhui Jia , Aisen Li . An elastic organic crystal with piezochromic luminescent behavior. Chinese Journal of Structural Chemistry, 2024, 43(6): 100323-100323. doi: 10.1016/j.cjsc.2024.100323
18. [18]
  Xinghong Cai , Qiang Yang , Yao Tong , Lanyin Liu , Wutang Zhang , Sam Zhang , Min Wang . AlO₂: A novel two-dimensional material with a high negative Poisson's ratio for the adsorption of volatile organic compounds. Chinese Chemical Letters, 2025, 36(2): 109586-. doi: 10.1016/j.cclet.2024.109586
19. [19]
  Jianqiu Li , Yi Zhang , Songen Liu , Jie Niu , Rong Zhang , Yong Chen , Yu Liu . Cucurbit[8]uril-based non-covalent heterodimer realized NIR cell imaging through topological transformation from nanowire to nanorod. Chinese Chemical Letters, 2024, 35(10): 109645-. doi: 10.1016/j.cclet.2024.109645
20. [20]
  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

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(733)
HTML views(38)

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