Citation: Gang Wang, Ke Wang. Studies on the Induction of Poly(lactic acid) Stereocomplex by Thermal and Tensile Treating[J]. Acta Polymerica Sinica, ;2018, 0(9): 1221-1227. doi: 10.11777/j.issn1000-3304.2018.18011 shu

Studies on the Induction of Poly(lactic acid) Stereocomplex by Thermal and Tensile Treating

Gang Wang ,
Ke Wang ^,

College of polymer science and engineering, Sichuan University, Chengdu 610065

Corresponding author: Ke Wang, wkestar@scu.edu.cn
Received Date: 11 January 2018
Revised Date: 15 March 2018
Available Online: 6 September 2018

Adding stereocomplex (SC) crystals into matrix can effectively improve the hydrolysis resistance and heat-resistance of polylactic acid (PLA). However, the existence of pre-formed SC crystals will increase the processing difficulty because a higher processing temperature is needed. Thus the exploration of inducing SC crystals via external force fields is important. In this paper, ‘quenched’ and ‘annealed’ PLA enantiomer mixtures were studied. The enantiomer mixtures were prepared by solution coprecipitation. Preparation of the ‘quenched’ specimen is done in two steps: hot pressed at 250 °C for 5 min and then quenched in air (15 °C). The method of annealing is done as following: hot pressed at 250 °C for 5 min, annealed at 200 °C for 30 min, and finally quenched in air. The X-ray diffraction patterns indicated that a loose structure with low order degree, named as quasi-ordered phase (QOP), was formed in the two types of the samples. Based on this structure, SC crystals was formed during stretching near the glass transition temperature (T_g) of PLA.The results of infrared spectra indicated that adequate amount of poly(D-lactic acid) (PDLA) is the prerequisite for the induction of SC crystals. There was no SC crystal generated in the specimens with 5% of PDLA, regardless of the treatment used. However, SC crystal appearred in the specimens with 20% of PDLA. This is because that adequate amount of QOP regions can merge and rebuild into complete crystals. In the specimens of high PDLA content, the transition could happen either during annealing or stretching above T_g (e.g., 70 °C). Owing to the self-nucleation and heterogeneous nucleation of QOP, α'-form crystal would be formed concomitantly during annealling. Therefore the former approach cannot generate pure SC crystal. As to the latter approach, depending on the tensile temperature and rate, mesophase, SC crystal and α'-form can be selectively generated. When stretched below T_g (e.g., 50 °C), only mesophase can be obtained beacause of low chain activity. As stretched at 70 °C, the tensile model has a great effect on the induced results. Fast stretching will induce highly pure SC crystals. Otherwise, when given sufficent time for chain segmet adjustment, both SC and α'-form crystals would be induced.
- Tensile deformation,
- Stereocomplex,
- Infrared spectroscopy,
- Quasi-ordered phase
1. [1]
  Sajjad S, Michel AH, Li H B, ParkC B. Prog Polym Sci, 2012, 37: 1657 − 1677
2. [2]
  Tsuji H. Macromol Biosci, 2005, 5: 569 − 597
3. [3]
  Tábi T, Hajb S, Kovács J G. Eur Polym J, 2016, 82: 232 − 243
4. [4]
  Jariyasakoolroj P, Tashiro K, Wang H, Yamamoto H, Chinsirikul W, Kerddonfag N, Chirachanchai S. Polymer, 2015: 234 − 245
5. [5]
  Zhou C B, Guo H L, Li J Q, Huang S Y, Li H F, Meng Y F, Yu D H, Christiansen J D C. RSC Adv, 2016, 6: 113762
6. [6]
  Sawai D, Takahashi K, Sasashige A, Kanamoto T, Hyon S. Macromolecules, 2003, 36: 3601 − 3605
7. [7]
  Pan P J, Liang Z C, Zhu B, Dong T, Inoue Y. Macromolecules, 2008, 41: 4296 − 4304
8. [8]
  de S P, Kovacs A J. Biopolymers, 1968, 6: 299 − 306
9. [9]
  Sasaki S, Asakura T. Macromolecules, 2003, 36: 8385 − 8390
10. [10]
  Furuhashi Y, Kimura Y, Yamane H. J Polym Sci, Part B: Polym Phys, 2007, 45: 218 − 228
11. [11]
  Zhang J M, Duan Y X, Sato H, Tsuji H, Noda I, Yan S K, Ozaki Y. Macromolecules, 2005, 38: 8012 − 8021
12. [12]
  Wasanasuk K, Tashiro K. Polymer, 2011, 52: 6097 − 6109
13. [13]
  Kawai T, Rahman N, Matsuba G, Nishida K, Kanaya T, Nakano M, Okamoto H, Kawada J, Usuki A, Honma N, Nakajima K, Matsuda M. Macromolecules, 2007, 40: 9463 − 9469
14. [14]
  Takahashi K, Sawai D, Yokoyama T, Kanamoto T, Hyon S. Polymer, 2004, 45: 4969 − 4976
15. [15]
  Cartier L, Okihara T, Ikada Y, Tsujic H, Puiggali J, Lotz B. Polymer, 2000, 41: 8909 − 8919
16. [16]
  Wasanasuk K, Tashiro K. Macromolecules, 2011, 44: 9650 − 9660
17. [17]
  Stoclet G, Seguela R, Lefebvre J M, Rochas C. Macromolecules, 2010, 43: 7228 − 7237
18. [18]
  Okihara T, Tsuji M, Kawaguchi A, Katayama K, Tsuji H, Hyon S, Ikada Y. J Macromol Sci Phys, 1991, 30(1-2): 119 − 140
19. [19]
  Furuhashi Y, Kimura Y, Yoshie N, Yamane H. Polymer, 2006, 47: 5965 − 5972
20. [20]
  Stoclet G. Polymer, 2016, 99: 231 − 239
21. [21]
  Yang C F, Huang Y F, Ruan J, Su A C. Macromolecules, 2012, 45: 872 − 878
22. [22]
  Zhang J M, Sato H, Tsuji H, Noda I, Ozaki Y. Macromolecules, 2005, 38: 1822 − 1828
23. [23]
  Zhuo R R, Zhang Y Y, Li G L, Shao C G, Wang Y M, Liu C T, Li Q, Cao W, Shen C Y. Vib Spectrosc, 2016, 86: 262 − 269
24. [24]
  Lv R H, Na B, Tian N N, Zou S F, Li Z J, Jiang S C. Polymer, 2011, 52: 4979 − 4984
25. [25]
  Na B, Tian N N, Lv R H, Li Z J, Xu W F, Fu Q. Polymer, 2010, 51: 563 − 567
26. [26]
  Hu J, Zhang T P, Gu M G, Chen X, Zhang J M. Polymer, 2012, 53: 4922 − 4926
27. [27]
  Hu X D, Shao J, Zhou D D, Li G, Ding J X, Chen X S. J Appl Polym Sci, 2016: 44626
1. [1]
  Supin Zhao , Jing Xie . Understanding the Vibrational Stark Effect of Water Molecules Using Quantum Chemistry Calculations. University Chemistry, 2025, 40(3): 178-185. doi: 10.12461/PKU.DXHX202406024
2. [2]
  Liang MA , Honghua ZHANG , Weilu ZHENG , Aoqi YOU , Zhiyong OUYANG , Junjiang CAO . Construction of highly ordered ZIF-8/Au nanocomposite structure arrays and application of surface-enhanced Raman spectroscopy. Chinese Journal of Inorganic Chemistry, 2024, 40(9): 1743-1754. doi: 10.11862/CJIC.20240075
3. [3]
  Yang Wang , Yunpeng Fu , Xiaoji Liu , Guotao Zhang , Guobin Li , Wanqiang Liu , Jinglun Wang . Structural Analysis of Nitrile Solutions Based on Infrared Spectroscopy Probes. University Chemistry, 2025, 40(4): 367-374. doi: 10.12461/PKU.DXHX202406113
4. [4]
  .
  南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积
  . CCS Chemistry, 2025, 7(0): -.
5. [5]
  Cuiping HE , Zhuxuan LI , Yuqing SUN , Jie LIU , Shicheng XU , Zhanchao WU . Ca²⁺ doping induced crystal phase transition and spectral regulation of Ba₃P₄O₁₃: Eu²⁺ phosphor. Chinese Journal of Inorganic Chemistry, 2025, 41(11): 2299-2306. doi: 10.11862/CJIC.20250074
6. [6]
  Ruonan Li , Shijie Liang , Yunhua Xu , Cuifen Zhang , Zheng Tang , Baiqiao Liu , Weiwei Li . Chlorine-Substituted Double-Cable Conjugated Polymers with Near-Infrared Absorption for Low Energy Loss Single-Component Organic Solar Cells. Acta Physico-Chimica Sinica, 2024, 40(8): 2307037-0. doi: 10.3866/PKU.WHXB202307037
7. [7]
  Jiajie Li , Xiaocong Ma , Jufang Zheng , Qiang Wan , Xiaoshun Zhou , Yahao Wang . Recent Advances in In-Situ Raman Spectroscopy for Investigating Electrocatalytic Organic Reaction Mechanisms. University Chemistry, 2025, 40(4): 261-276. doi: 10.12461/PKU.DXHX202406117
8. [8]
  Ruixin XU , Hongtuo LI , Chen SHI , Yanhong YAN . Factors influencing the spectral properties of composite luminescent materials SrTiO₃: Eu³⁺/SrAl₂O₄: Eu²⁺, Dy³⁺. Chinese Journal of Inorganic Chemistry, 2025, 41(11): 2307-2316. doi: 10.11862/CJIC.20250055
9. [9]
  Yajie Li , Bin Chen , Yiping Wang , Hui Xing , Wei Zhao , Geng Zhang , Siqi Shi . Inhibiting Dendrite Growth by Customizing Electrolyte or Separator to Achieve Anisotropic Lithium-Ion Transport: A Phase-Field Study. Acta Physico-Chimica Sinica, 2024, 40(3): 2305053-0. doi: 10.3866/PKU.WHXB202305053
10. [10]
  Tong WANG , Xuefang ZHU , Qi GAO , Hongbo ZHANG , Chao REN , Lixia GE . Luminescence and thermal stability of Tb³⁺-Eu³⁺ doped glass-ceramics containing Na_8.12Y_1.293Si₆O₁₈ crystal phase. Chinese Journal of Inorganic Chemistry, 2025, 41(11): 2237-2250. doi: 10.11862/CJIC.20250137
11. [11]
  Ke Qiu , Fengmei Wang , Mochou Liao , Kerun Zhu , Jiawei Chen , Wei Zhang , Yongyao Xia , Xiaoli Dong , Fei Wang . A Fumed SiO₂-based Composite Hydrogel Polymer Electrolyte for Near-Neutral Zinc-Air Batteries. Acta Physico-Chimica Sinica, 2024, 40(3): 2304036-0. doi: 10.3866/PKU.WHXB202304036
12. [12]
  Huafeng SHI . Construction of MnCoNi layered double hydroxide@Co-Ni-S amorphous hollow polyhedron composite with excellent electrocatalytic oxygen evolution performance. Chinese Journal of Inorganic Chemistry, 2025, 41(7): 1380-1386. doi: 10.11862/CJIC.20240378
13. [13]
  Lijun Yue , Siya Liu , Peng Liu . 不同晶相纳米MnO₂的制备及其对生物乙醇选择性氧化催化性能的测试——一个科研转化的综合化学实验. University Chemistry, 2025, 40(8): 225-232. doi: 10.12461/PKU.DXHX202410005
14. [14]
  Xue Wu , Yupeng Liu , Bingzhe Wang , Lingyun Li , Zhenjian Li , Qingcheng Wang , Quansheng Cheng , Guichuan Xing , Songnan Qu . Rationally assembling different surface functionalized carbon dots for enhanced near-infrared tumor photothermal therapy. Acta Physico-Chimica Sinica, 2025, 41(9): 100109-0. doi: 10.1016/j.actphy.2025.100109
15. [15]
  Xue-Peng Zhang , Yuchi Long , Yushu Pan , Jiding Wang , Baoyu Bai , Rui Ding . 定量构效关系方法学习探索：以钴卟啉活化氧气为例. University Chemistry, 2025, 40(8): 345-359. doi: 10.12461/PKU.DXHX202410107
16. [16]
  Xiao-Qi Xu , Yapei Wang . Practice of Cultivating Multi-Disciplinary Talents with Comprehensive Skills through Demand-Driven, Individualized Education, and Humanities and Science Integration. University Chemistry, 2024, 39(6): 90-97. doi: 10.3866/PKU.DXHX202311049
17. [17]
  Ke Li , Chuang Liu , Jingping Li , Guohong Wang , Kai Wang . Architecting Inorganic/Organic S-Scheme Heterojunction of Bi₄Ti₃O₁₂ Coupling with g-C₃N₄ for Photocatalytic H₂O₂ Production from Pure Water. Acta Physico-Chimica Sinica, 2024, 40(11): 2403009-0. doi: 10.3866/PKU.WHXB202403009
18. [18]
  Shunü Peng , Huamin Li , Zhaobin Chen , Yiru Wang . Simultaneous Application of Multiple Quantitative Analysis Methods in Gas Chromatography for the Determination of Active Ingredients in Traditional Chinese Medicine Preparations. University Chemistry, 2025, 40(10): 243-249. doi: 10.12461/PKU.DXHX202412043
19. [19]
  Zhilian Liu , Wengui Wang , Hongxiao Yang , Yu Cui , Shoufeng Wang . Ideological and Political Education Design for the Synthesis of Irinotecan Drug Intermediate 7-Ethyl Camptothecin. University Chemistry, 2024, 39(2): 89-93. doi: 10.3866/PKU.DXHX202306012
20. [20]
  Jiahui CHEN , Tingting ZHENG , Xiuyun ZHANG , Wei LÜ . Research progress of near-infrared absorption inorganic nanomaterials in photothermal and photodynamic therapy of tumors. Chinese Journal of Inorganic Chemistry, 2024, 40(12): 2396-2414. doi: 10.11862/CJIC.20240106

Get Citation

PDF

XML

Metrics

PDF Downloads(0)
Abstract views(293)
HTML views(25)

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

Studies on the Induction of Poly(lactic acid) Stereocomplex by Thermal and Tensile Treating

南开大学师唯/华北电力大学（保定）刘景维：二维配位聚合物中有序的亲锂冠醚位点用于无枝晶锂沉积

Metrics

通讯作者: 陈斌, bchen63@163.com