Static Crystallization and Shear Induced Crystallization of the Poly（L-lactic acid） Telechelic Ionomer

doi:10.19894/j.issn.1000-0518.230107

Chinese Journal of Applied Chemistry ›› 2023, Vol. 40 ›› Issue (10): 1412-1419.DOI: 10.19894/j.issn.1000-0518.230107

• Full Papers • Previous Articles Next Articles

Static Crystallization and Shear Induced Crystallization of the Poly（L-lactic acid） Telechelic Ionomer

Fan LIU¹^,², Shao-Yong HUANG¹, Quan CHEN¹^,²()

^1.State Key Laboratory of Polymer Physics and Chemistry，Changchun Institute of Applied Chemistry，Chinese Academy of Sciences，Changchun 130022，China
^2.School of Applied Chemistry and Engineering，University of Science and Technology of China，Hefei 230026，China

Received:2023-04-14 Accepted:2023-08-21 Published:2023-10-01 Online:2023-10-13
Contact: Quan CHEN
About author:qchen@ciac.ac.cn
Supported by:
the National Natural Science Foundation of China(92161126)

1. .pdf(466KB)

Abstract

Abstract:

The telechelic ionomer tends to form a relatively uniform reversible network and has attracted the attention of many polymer researchers who are seeking high-performance materials. We synthesize the slightly entangled poly（L-lactic acid） telechelic ionomer based on sodium sulfonate groups. The telechelic samples exhibit extremely slow crystallization kinetics below the melting temperature （T_m） and above the glass transition temperature （T_g）， which enables us to examine the linear viscoelasticity of the ionomer melt sample therein. The ionic aggregates form physical crosslinks， leading to a wide plateau regime and delayed terminal relaxation. The application of shear flow with Weissenberg number ＞1 （at 85 ℃） strongly accelerates the crystallization， leading to the strong shear thickening behavior. The critical work （W_crit） obtained in the case that the thickening occurs after achieving the steady state is higher than that in the opposite case， where the thickening occurs before achieving the steady state， suggesting that the continuous dissociation and association （during the steady state） dissipate a fraction of energy that does not contribute to the flow-induced crystallization.

Key words: Poly（L-lactic acid） telechelic ionomers, Shear flow induced crystallization, Rheology

CLC Number:

O631

Fan LIU, Shao-Yong HUANG, Quan CHEN. Static Crystallization and Shear Induced Crystallization of the Poly（L-lactic acid） Telechelic Ionomer[J]. Chinese Journal of Applied Chemistry, 2023, 40(10): 1412-1419.

Figures/Tables 6

Fig.1 The synthesis route of the PLLA ionomer with one ion at each chain via ring-opening polymerization （A） and the PLLA telechelic ionomer sample with ions at both ends via coupling reaction （B）

Fig.2 DSC traces for PLLA obtained at various isothermal crystallization temperatures. Inset shows that the half crystallization time t1/2 is plotted against Tc

Fig.3 Pseudo-master curves of storage and loss moduli， G' and G"， of the PLLA ionomer sample with Tr=80 ℃， the solid lines show the terminal tails and the dashed line indicates the plateau modulus

Fig.4 The stress growth coefficient η+ of PLLA plotted against time t obtained upon applying a startup shear at rates from 0.1 to 10 s-1. The arrows indicate τc， which is the onset time of the shear-flow-induced crystallization. Inset plots of the critical work Wcrit of the PLLA ionomer sample obtained from the shear experiment （Unfilled and filled spheres correspond to shear hardening before and after achieving steady stress， respectively.?）， Wcrit is plotted against Wi （in a range from 1 to 100）. The dashed line indicates an average value of the corresponding unfilled symbols

Fig.5 The storage and loss moduli， G' and G"， obtained immediately after pre-shear （γ˙=0.1~5 s-1）， against the angular frequency ω

References 33

1	LIU G， ZHANG X， WANG D. Tailoring crystallization： towards high-performance poly（lactic acid）［J］. Adv Mater， 2014， 26（40）： 6905-6911.
2	NAGARAJAN V， MOHANTY A K， MISRA M. Perspective on polylactic acid （PLA） based sustainable materials for durable applications： focus on toughness and heat resistance［J］. ACS Sustainable Chem Eng， 2016， 4（6）： 2899-2916.
3	OTHMAN N， XU C， MEHRKHODAVANDI P， et al. Thermorheological and mechanical behavior of polylactide and its enantiomeric diblock copolymers and blends［J］. Polymer， 2012， 53（12）： 2443-2452.
4	YASUNIWA M， TSUBAKIHARA S， IURA K， et al. Crystallization behavior of poly（L-lactic acid）［J］. Polymer， 2006， 47（21）： 7554-7563.
5	WANG Z， MA Z， LI L B. Flow-induced crystallization of polymers： molecular and thermodynamic considerations［J］. Macromolecules， 2016， 49（5）： 1505-1517.
6	CUI K P， MA Z， TIAN N， et al. Multiscale and multistep ordering of flow-induced nucleation of polymers［J］. Chen Rev， 2018， 118（4）： 1840-1886.
7	KUMARASWAMY G， ISSAIAN A M， KORNFIELD J A J M. Shear-enhanced crystallization in isotactic polypropylene. 1. correspondence between in situ rheo-optics and ex situ structure determination［J］. Macromolecules， 1999， 32（22）： 7537-7547.
8	HSIAO B S， YANG L， SOMANI R H， et al. Unexpected shish-kebab structure in a sheared polyethylene melt［J］. Phys Rev Lett， 2005， 94（11）： 117802.
9	GRAHAM R S. Understanding flow-induced crystallization in polymers： a perspective on the role of molecular simulations［J］. J Rheol， 2019， 63（1）： 203-214.
10	ZHONG Y， FANG H G， ZHANG Y Q， et al. Rheologically determined critical shear rates for shear-induced nucleation rate enhancements of poly（lactic acid）［J］. ACS Sustainable Chem Eng， 2013， 1（6）： 663-672.
11	XU H， XIE L， HAKKARAINEN M. Beyond a model of polymer processing-triggered shear： reconciling shish-kebab formation and control of chain degradation in sheared poly（L-lactic acid）［J］. ACS Sustainable Chem Eng， 2015， 3（7）： 1443-1452.
12	JALALI A， HUNEAULT M A， NOFAR M， et al. Effect of branching on flow-induced crystallization of poly（lactic acid）［J］. Eur Polym J， 2019， 119： 410-420.
13	ZHANG Z， HATZIKIRIAKOS S G. Flow-induced crystallization of polylactides［J］. J Rheol， 2022， 66（2）： 257-273.
14	BIELA T， DUDA A， PENCZEK S， et al. Well-defined star polylactides and their behavior in two-dimensional chromatography［J］. J Polym Sci Pol Chem， 2002， 40（16）： 2884-2887.
15	BIELA T， DUDA A， RODE K， et al. Characterization of star-shaped poly（L-lactide）s by liquid chromatography at critical conditions［J］. Polymer， 2003， 44（6）： 1851-1860.
16	BRZEZIŃSKI M， BIELA T. Supramolecular polylactides by the cooperative interaction of the end groups and stereocomplexation［J］. Macromolecules， 2015， 48（9）： 2994-3004.
17	YANG D D， WU C， WU G， et al. Toughening of polylactide with high tensile strength via constructing an integrative physical crosslinking network based on ionic interactions［J］. Macromolecules， 2021， 54（1）： 291-301.
18	KULKARNI A. Effect of ionic interactions on crystallization of star telechelic poly（L-lactide） ionomers［J］. Polymer， 2022， 252： 124939.
19	ZHANG Z， CHEN Q， COLBY R H. Dynamics of associative polymers［J］. Soft Matter， 2018， 14（16）： 2961-2977.
20	ZHANG Z， LIU C， CAO X， et al. Linear viscoelastic and dielectric properties of strongly hydrogen-bonded polymers near the sol-gel transition［J］. Macromolecules， 2016， 49（23）： 9192-9202.
21	ZHANG Z， HUANG C， WEISS R A， et al. Association energy in strongly associative polymers［J］. J Rheol， 2017， 61（6）： 1199-1207.
22	CHEN Q. Dynamics of ion-containing polymers［J］. Acta Polym Sin， 2017，（8）： 1220-1233.
23	WU S， LIU S， ZHANG Z， et al. Dynamics of telechelic ionomers with distribution of number of ionic stickers at chain ends［J］. Macromolecules， 2019， 52（6）： 2265-2276.
24	WU S， CAO X， ZHANG Z， et al. Molecular design of highly stretchable ionomers［J］. Macromolecules， 2018， 51（12）： 4735-4746.
25	FERRY J D. Viscoelastic properties of polymers ［M］. 3^rd Ed. Wiley： New York， 1980.
26	LIU C， HE J， VAN RUYMBEKE E， et al. Evaluation of different methods for the determination of the plateau modulus and the entanglement molecular weight ［J］. Polymer， 2006， 47（13）： 4461-4479.
27	LIU S， WU S， CHEN Q. Using coupling motion of connecting ions in designing telechelic ionomers［J］. ACS Macro Lett， 2020， 9（7）： 917-923.
28	LIU S， ZHANG Z， CHEN Q， et al. Nonlinear rheology of telechelic ionomers based on sodium sulfonate and carboxylate［J］. Macromolecules， 2021， 54（20）： 9724-9738.
29	OTHMAN N， ACOSTA-RAMÍREZ A， MEHRKHODAVANDI P， et al. Solution and melt viscoelastic properties of controlled microstructure poly（lactide）［J］. J Rheol， 2011， 55（5）： 987-1005.
30	LEIBLER L， RUBINSTEIN M， COLBY R H. Dynamics of reversible networks ［J］. Macromolecules， 1991， 24（16）： 4701-4707.
31	CHEN Q， HUANG C， WEISS R A， et al. Viscoelasticity of reversible gelation for ionomers［J］. Macromolecules， 2015， 48（4）： 1221-1230.
32	ZHANG J， CHEN Q. Shear-induced precursors of fibrillar crystals of poly（butene-1）： a rheological study［J］. Chin J Polym Sci， 2022， 40（6）： 618-623.
33	LIU C， ZHANG J， ZHANG Z， et al. Shear-induced oriented crystallization for isotactic poly（1-butene） and its copolymer with ethylene［J］. Macromolecules， 2020， 53（8）： 3071-3081.

[1]	FAN Liangjiao, TIAN Yuqin, QIAN Qin, CHEN Lei, GUO Hongwei, XIN Aiyuan, HOU Wanguo. Rheological Properties of Xanthan Gum/Guar Gum Mixed Solution and Its Borax-Crosslinked System [J]. Chinese Journal of Applied Chemistry, 2020, 37(5): 531-540.
[2]	PAN Ge, LIU Fang, FU Zhilei, LI Shuangshuang, XU Donghua, XU Zhaohua, SHI Tongfei, WANG Xiaowei, MA Rui. Effect of Mass Fraction of Color Paste in Waterborne Polyurethane Coatings on Low Temperature Blasting Properties of Polyvinyl Chloride Skin [J]. Chinese Journal of Applied Chemistry, 2020, 37(2): 182-189.
[3]	WANG Xiaowei, FU Zhilei, LIU Fang, PAN Ge, XU Donghhua, GUAN Dongbo, DOU Yanli, SHI Tongfei, YAO Weiguo. Effect of Polyvinyl Chloride Skin Composition on Vulcanization of Additive Silicone Rubber [J]. Chinese Journal of Applied Chemistry, 2020, 37(1): 32-39.
[4]	MA Rui,LI Shuangshuang,WANG Xiaowei,FU Zhilei,PAN Ge,FU Bo,SHI Tongfei,HUANG Yineng,TANG Huaqing,LI Sijia,XU Donghua,ZHOU Hengwei. Relationship Between Particle Size and Distribution of Commercial Polyacrylic Superabsorbent Resin and Its Gelation Concentration [J]. Chinese Journal of Applied Chemistry, 2019, 36(7): 807-814.
[5]	Gang HUANG, Hongwei ZHANG, Huanhuan ZHANG, Tongfei SHI, Donghua XU. Influence of Graphene Oxide on the Rheological Properties of Poly(vinyl alcohol)/Borate Hydrogel [J]. Chinese Journal of Applied Chemistry, 2018, 35(7): 767-775.
[6]	SHANG Yazhuo, WANG Yuqin, DONG Xiuyan, ZHU Yunfeng, LIU Honglai. Effect of Sodium Dodecyl Sulfate on Interfacial Aggregation Behavior of Zwitterionic Imidazole Surfactant 3-(1-Dodecyl-3-imidazolio)propanesulfonate [J]. Chinese Journal of Applied Chemistry, 2016, 33(6): 641-648.
[7]	LIU Ru,LI Haiping,HOU Wanguo. Synthesis of Sodium Trimetaphosphate Crosslinked Xanthan Gum and Rheological Properties of Its Aqueous Solution [J]. Chinese Journal of Applied Chemistry, 2015, 32(9): 1061-1069.
[8]	LIAN Yinghui1, LI Lifang2*, ZHAO Fan2, ZHAO Wenjie2. Rheologic Property and Influencing Factors of Sodium Carboxymethyl Cellulose/Montmorillonite Suspension [J]. Chinese Journal of Applied Chemistry, 2013, 30(10): 1208-1214.
[9]	FENG Shanghua*, ZHANG Cuijuan, LI Yanfei. Rheology of Lamellar Liquid Crystal Formed from Nonyl Phenol Ethoxylate(10) and Water [J]. Chinese Journal of Applied Chemistry, 2012, 29(05): 565-570.
[10]	REN Chang-Yi, ZHANG Zhen-Jiang, XING Hai-Ping, TANG Tao*. The Foam of Metallocene Catalyzed Polyethylene/Polymerizable Montmoillonite Nanocomposite with Bonded Interface Using Supercritical Carbon Dioxide as Foaming Agent [J]. Chinese Journal of Applied Chemistry, 2010, 27(10): 1129-1132.
[11]	ZHUANG Zhan-Xing1,2， LU FuSui1*， CHEN Tian-Tian1， LI Wei1， GUO Wen-Ting1， LUO Wan-Chun1. Effect of Polymer Dispersant on the Rheological Properties of Hexaflumuron SC [J]. Chinese Journal of Applied Chemistry, 2010, 27(04): 470-473.
[12]	Xu Guiying, Liu Muxin, Mao Hongzhi, Zeng Lirong. Effect of Polyacrylamide on Rheology of Petroleum Sulfonate-Butanol Mixed Micelle System [J]. Chinese Journal of Applied Chemistry, 1995, 0(4): 48-51.
[13]	Shi Tiejun. RHEOLOGICAL PROPERTIES AND MORPHOLOGY OF CHLORINATED POLY (ⅥNYL CHLORIDE)/EPOXIDE RESIN BLENDS [J]. Chinese Journal of Applied Chemistry, 1992, 0(6): 120-122.

Static Crystallization and Shear Induced Crystallization of the Poly（L-lactic acid） Telechelic Ionomer

RichHTML

PDF

Supplement

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 6

References 33

Related Articles 13

Recommended Articles

Metrics

Comments