Supramolecular thermoplastic elastomers via self‐complementary quadruple hydrogen bonding between polybutadiene‐based triblock copolymers

2020 ◽  
Vol 138 (12) ◽  
pp. 50085
Author(s):  
Lu Dai ◽  
Suyun Jie ◽  
Zhiyang Bu ◽  
Bo‐Geng Li
Keyword(s):  
Hydrogen Bonding ◽  
Triblock Copolymers ◽  
Thermoplastic Elastomers ◽  
Quadruple Hydrogen Bonding

scholarly journals Quadruple Hydrogen Bond-Containing A-AB-A Triblock Copolymers: Probing the Influence of Hydrogen Bonding in the Central Block

Molecules ◽  
2021 ◽  
Vol 26 (15) ◽  
pp. 4705
Author(s):  
Boer Liu ◽  
Xi Chen ◽  
Glenn A. Spiering ◽  
Robert B. Moore ◽  
Timothy E. Long
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Microphase Separation ◽  
Triblock Copolymers ◽  
Random Copolymer ◽  
Thermomechanical Properties ◽  
Structure Property ◽  
Scanning Calorimetry ◽  
Central Block ◽  
Quadruple Hydrogen Bonding

This work reveals the influence of pendant hydrogen bonding strength and distribution on self-assembly and the resulting thermomechanical properties of A-AB-A triblock copolymers. Reversible addition-fragmentation chain transfer polymerization afforded a library of A-AB-A acrylic triblock copolymers, wherein the A unit contained cytosine acrylate (CyA) or post-functionalized ureido cytosine acrylate (UCyA) and the B unit consisted of n-butyl acrylate (nBA). Differential scanning calorimetry revealed two glass transition temperatures, suggesting microphase-separation in the A-AB-A triblock copolymers. Thermomechanical and morphological analysis revealed the effects of hydrogen bonding distribution and strength on the self-assembly and microphase-separated morphology. Dynamic mechanical analysis showed multiple tan delta (δ) transitions that correlated to chain relaxation and hydrogen bonding dissociation, further confirming the microphase-separated structure. In addition, UCyA triblock copolymers possessed an extended modulus plateau versus temperature compared to the CyA analogs due to the stronger association of quadruple hydrogen bonding. CyA triblock copolymers exhibited a cylindrical microphase-separated morphology according to small-angle X-ray scattering. In contrast, UCyA triblock copolymers lacked long-range ordering due to hydrogen bonding induced phase mixing. The incorporation of UCyA into the soft central block resulted in improved tensile strength, extensibility, and toughness compared to the AB random copolymer and A-B-A triblock copolymer comparisons. This study provides insight into the structure-property relationships of A-AB-A supramolecular triblock copolymers that result from tunable association strengths.

Quadruple hydrogen bonding containing supramolecular thermoplastic elastomers: Mechanical and morphological correlations

2018 ◽  
Vol 57 (1) ◽  
pp. 13-23 ◽  
Author(s):  
Xi Chen ◽  
Keren Zhang ◽  
Samantha J. Talley ◽  
Christina M. Orsino ◽  
Robert B. Moore ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Thermoplastic Elastomers ◽  
Quadruple Hydrogen Bonding

scholarly journals Synthesis, Properties, and Biodegradability of Thermoplastic Elastomers Made from 2-Methyl-1,3-propanediol, Glutaric Acid and Lactide

Life ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 43
Author(s):  
Lamya Zahir ◽  
Takumitsu Kida ◽  
Ryo Tanaka ◽  
Yuushou Nakayama ◽  
Takeshi Shiono ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Glutaric Acid ◽  
Triblock Copolymers ◽  
Tensile Tests ◽  
Thermoplastic Elastomers ◽  
Proteinase K ◽  
Synthesis Properties

An innovative type of biodegradable thermoplastic elastomers with improved mechanical properties from very common and potentially renewable sources, poly(L-lactide)-b-poly(2-methyl-1,3-propylene glutarate)-b-poly(L-lactide) (PLA-b-PMPG-b-PLA)s, has been developed for the first time. PLA-b-PMPG-b-PLAs were synthesized by polycondensation of 2-methyl-1,3-propanediol and glutaric acid and successive ring-opening polymerization of L-lactide, where PMPG is an amorphous central block with low glass transition temperature and PLA is hard semicrystalline terminal blocks. The copolymers showed glass transition temperature at lower than −40 °C and melting temperature at 130–152 °C. The tensile tests of these copolymers were also performed to evaluate their mechanical properties. The degradation of the copolymers and PMPG by enzymes proteinase K and lipase PS were investigated. Microbial biodegradation in seawater was also performed at 27 °C. The triblock copolymers and PMPG homopolymer were found to show 9–15% biodegradation within 28 days, representing their relatively high biodegradability in seawater. The macromolecular structure of the triblock copolymers of PLA and PMPG can be controlled to tune their mechanical and biodegradation properties, demonstrating their potential use in various applications.

Use of Quadruple Hydrogen Bonding as the Switching Phase in Thermo- and Light-Responsive Shape Memory Hydrogel

2021 ◽  
Author(s):  
Yufang Song ◽  
Yiming Chen ◽  
Ran Chen ◽  
Hongji Zhang ◽  
Dongjian Shi ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Shape Memory ◽  
Quadruple Hydrogen Bonding

Reprocessable Supramolecular Elastomers of Poly(Siloxane–Urethane) via Self‐Complementary Quadruple Hydrogen Bonding

2021 ◽  
pp. 2100116
Author(s):  
Xiyang Ma ◽  
Debo Zhou ◽  
Lei Liu ◽  
Linlin Wang ◽  
Huidong Yu ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Quadruple Hydrogen Bonding

Hydrogen-Bonding Mediated Self-Assembly of Amphiphilic ABA Triblock Copolymers into Well-Defined Giant Vesicles

2021 ◽  
Author(s):  
Huiying Wang ◽  
Qiang Chen ◽  
Zhen Geng ◽  
Jingyi Rao ◽  
Bijin Xiong ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Triblock Copolymers ◽  
Giant Vesicles

Giant vesicles represent an extremely useful system to mimick biomembranes; however, available methodologies towards easy and direct vesicles construction are still scarce. By designing a hydrogen-bonding (H-bonding) amphiphilic ABA triblock...

scholarly journals MACROSCOPIC SELF-ASSEMBLY OF ORGANOGELS THROUGH QUADRUPLE HYDROGEN BONDING

2013 ◽  
Vol 013 (10) ◽  
pp. 1241-1246 ◽  
Author(s):  
Lu Hai-xu ◽  
Tang Li-ming
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
Quadruple Hydrogen Bonding

Light-emitting iridium(iii) and ruthenium(ii) polypyridyl complexes containing quadruple hydrogen-bonding moieties

2006 ◽  
pp. 1636-1644 ◽  
Author(s):  
Veronica Marin ◽  
Elisabeth Holder ◽  
Richard Hoogenboom ◽  
Emine Tekin ◽  
Ulrich S. Schubert
Keyword(s):  
Hydrogen Bonding ◽  
Polypyridyl Complexes ◽  
Light Emitting ◽  
Quadruple Hydrogen Bonding

Thermoplastic elastomers by hydrogen bonding 1. Rheological properties of modified polybutadiene

1986 ◽  
Vol 264 (9) ◽  
pp. 773-778 ◽  
Author(s):  
R Stadler ◽  
L. de Lucca Freitas
Keyword(s):  
Hydrogen Bonding ◽  
Rheological Properties ◽  
Thermoplastic Elastomers

scholarly journals All-Polycarbonate Thermoplastic Elastomers Based on Triblock Copolymers Derived from Triethylborane-Mediated Sequential Copolymerization of CO2 with Various Epoxides

2020 ◽  
Vol 53 (13) ◽  
pp. 5297-5307 ◽  
Author(s):  
Mingchen Jia ◽  
Dongyue Zhang ◽  
Gijs W. de Kort ◽  
Carolus H. R. M. Wilsens ◽  
Sanjay Rastogi ◽  
...  
Keyword(s):  
Triblock Copolymers ◽  
Thermoplastic Elastomers
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