A novel biodegradable multiblock poly(ester urethane) containing poly(l-lactic acid) and poly(butylene succinate) blocks

Zeng, Jian‐Bing; Li, Yidong; Zhu, Qun-Ying; Yang, Ke‐Ke; Wang, Xiuli; Wang, Yu‐Zhong

doi:10.1016/j.polymer.2009.01.001

Cited by 173 publications

(145 citation statements)

References 30 publications

Supporting

Mentioning

136

Contrasting

Unclassified

Order By: Relevance

“…Therefore, the two precursors were prepared previously. HOePBSeOH was prepared by condensation polymerization of 1,4-butanediol and succinic acid with molar ratio of 1.2:1 [33]. The synthetic procedure of HOePBSeOH is shown in Scheme 1A, and the structure of HOePBSeOH was characterized by 1 H NMR.…”

Section: Synthesis and Characterization Of Dihydroxyl Terminated Pbs mentioning

confidence: 99%

Properties regulation of poly(butylene succinate) ionomers through their ionic group distribution

Chen

et al. 2015

Polymer

Self Cite

View full text Add to dashboard Cite

Section: Synthesis and Characterization Of Dihydroxyl Terminated Pbs mentioning

confidence: 99%

Properties regulation of poly(butylene succinate) ionomers through their ionic group distribution

Chen

et al. 2015

Polymer

Self Cite

View full text Add to dashboard Cite

“…On the one hand, toughening PLLA has gained much interest and various techniques, such as plasticization, chemical copolymerization, and polymer blending, have been employed to toughen PLA [12][13][14][15]. Among those, polymer blending with flexible or elastic polymers has proved to be the most cost-effective way to improve the toughness [6,16].…”

Section: Introductionmentioning

confidence: 99%

Fully bio-based, highly toughened and heat-resistant poly(L-lactide) ternary blends via dynamic vulcanization with poly(D-lactide) and unsaturated bioelastomer

Zeng

et al. 2017

Sci. China Mater.

Self Cite

View full text Add to dashboard Cite

Inherent brittleness and low heat resistance are the two major obstacles that hinder the wide applications of poly(L-lactide) (PLLA). In this study, we report a fully biobased, highly toughened and heat-resistant PLLA ternary blend, which was prepared by dynamic vulcanization of PLLA with poly(D-lactide) (PDLA) and an unsaturated bioelastomer (UBE). The results indicated that during dynamic vulcanization PDLA cocrystallized with PLLA to form stereocomplex (SC) crystallites, which not only enhanced the molecular entanglement but also accelerated the crystallization rate of PLLA matrix. With increase in the content of PDLA, the matrix molecular entanglement increased while phase-separation was enhanced, which enabled the impact strength to increase first and then decrease. The ternary blends containing 10 wt.% PDLA showed the highest impact strength. The presence of SC crystallites makes it possible to achieve a fully sustainable PLLA/VUB/PDLA ternary blend with highly crystalline matrix under conventional injection molding, due to the high nucleation efficiency of SC towards crystallization of PLLA. The highly crystalline ternary blend showed excellent heat resistance and better impact toughness than high impact polystyrene.

show abstract

“…The increase of DH m and DH c was reported to be caused by the enhanced crystallinity resulting from the reduced urethane linkage content. 44 It is noted in the second run DSC curves (Fig. 3c) that no separated crystallization peaks and less distinct melting peaks are observed, suggesting less separated PLA-and PLAE-rich phases in the blends through self-adjustment of PLAE molecular chain.…”

Section: Synthesis Of the Plag And Plaementioning

confidence: 87%

Enhanced mechanical properties of PLA/PLAE blends via well-dispersed and compatilized nanostructures in the matrix

Cai

Zeng

Zhang³

et al. 2016

RSC Adv.

View full text Add to dashboard Cite

Polylactide (PLA) was toughened by a PLA-based thermoplastic elastomer (PLAE). PLAE was prepared by chain extension of PLA copolymer derived from polylactic acid (PLA) and poly(tetramethylene ether glycol) (PTMEG) via melt polycondensation. The tensile strength of the toughened-PLA (PLAE30) reached 70 MPa, while the elongation at break was found to be above 140% compared to its plain PLA counterpart. The relationship between the phase morphology of the blends and their mechanical behavior was investigated with atomic force microscopy (AFM), scanning electron microscopy (SEM), and scanning transmission X-ray microscopy (STXM). It was found that the well-dispersed nanoscale structures in the matrix of PLA/PLAE blends are mainly responsible for the significantly enhanced mechanical properties. Also discussed are the detailed microstructural development in PLAE and the toughening mechanism.

show abstract

A novel biodegradable multiblock poly(ester urethane) containing poly(l-lactic acid) and poly(butylene succinate) blocks

Cited by 173 publications

References 30 publications

Properties regulation of poly(butylene succinate) ionomers through their ionic group distribution

Properties regulation of poly(butylene succinate) ionomers through their ionic group distribution

Fully bio-based, highly toughened and heat-resistant poly(L-lactide) ternary blends via dynamic vulcanization with poly(D-lactide) and unsaturated bioelastomer

Enhanced mechanical properties of PLA/PLAE blends via well-dispersed and compatilized nanostructures in the matrix

Contact Info

Product

Resources

About