Introduction of stereocomplex crystallites of PLA for the solid and microcellular poly(lactide)/poly(butylene adipate-<i>co</i>-terephthalate) blends

Shi, Xuetao; Qin, Jianbin; Wang, Long; Ren, Ling; Rong, Fan; Li, Daiheng; Wang, Ryan; Zhang, Guangcheng

doi:10.1039/c8ra01570h

Cited by 59 publications

(20 citation statements)

References 47 publications

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“…[32][33][34] Shi et al blended the PLLA/ PBAT system with different PDLA. 35 The sc-PLA crystallites promoted the rheological properties, especially the complex viscosity of PLLA/PBAT system efficiently, which is due to the reserved sc-PLA crystals acted as crosslinking sites. In our previous study, bioresource-based blends of the P34HB and sc-PLA were prepared.…”

Section: Introductionmentioning

confidence: 95%

Blends of poly(butylene adipate-co-terephthalate) (PBAT) and stereocomplex polylactide with improved rheological and mechanical properties

Zhao

Liu

et al. 2020

RSC Adv.

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Section: Introductionmentioning

confidence: 95%

Blends of poly(butylene adipate-co-terephthalate) (PBAT) and stereocomplex polylactide with improved rheological and mechanical properties

Zhao

Liu

et al. 2020

RSC Adv.

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“…Common typical biodegradable polymers include poly(lactic acid), poly(butylene succinate) (PBS), poly(butylene adipate‐ co ‐terephthalate), starch‐based biodegradable polymers, and so on . Among them, PBS as one of the important synthetic biodegradable aliphatic polyesters has been investigated extensively and applied in considerable advanced fields due to its excellent mechanical properties, good thermal resistance, and melt processability .…”

Section: Introductionmentioning

confidence: 99%

Simple and feasible strategy to fabricate microcellular poly(butylene succinate) foams by chain extension and isothermal crystallization induction

Yin

Zhou

et al. 2019

J of Applied Polymer Sci

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In this article, a facile and efficient isothermal crystallization induction method was proposed to fabricate microcellular poly(butylene succinate) (PBS) foams with supercritical CO2. The good regularity of PE chain segments and high reactive epoxy groups in ethylene‐glycidyl methacrylate copolymer (PE‐g‐GMA) serving as a chain extender were employed to improve the crystallization behaviors, viscoelasticity, and foaming behaviors of PBS through chain extension reaction. The effect of PE‐g‐GMA content on the thermal properties, rheological performances, and cellular morphology of various PBS samples was investigated systematically. When the PE‐g‐GMA content switched from 7.5 to 10 wt %, an interesting transition from fine cells to microcells was observed in PBS/PE‐g‐GMA foams. Microcellular PBS foam modified by 10 wt % PE‐g‐GMA was successfully prepared at the foaming temperature of 87 °C and the induction time of 7 min, in which its cell size and cell density could reach 6.63 ± 1.93 μm and 3.75 × 109 cells cm−3, respectively. The formation of abundant but tiny spherocrystals in chain extended PBS samples made a considerable contribution for preparing microcellular PBS foams. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48850.

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“…To solve the aforementioned problems, numerous methods were used in preparing microcellular semicrystalline polymer foam, such as introducing special nanofillers, adjusting molecular structure of polymers (chain extension, crosslinking, etc. ), and blending with other polymers . Microcellular foams based on polypropylene (PP)/ethylene propylene diene monomer/organoclay nanocomposites were fabricated via a batch foaming process using supercritical N 2 as a physical blowing agent.…”

Section: Introductionmentioning

confidence: 99%

“…The microcellular morphology of the PLA/PBAT blending foam exhibited an average cell size of approximately 2–3 μm and also a cell density on the order of 10 10 cells cm −3 . The formation mechanism was that stereocomplex crystallite networks in the PLA matrix acted as cell nucleating agents, which meanwhile resisted the force of cell growth and then prevented the cell collapse . Tiwary et al .…”

Section: Introductionmentioning

confidence: 99%

“…had studied the influence of material properties and foaming temperature on the transition from microcellular to nanocellular PLA foam by controlling viscosity, branching, and crystallization, using supercritical N 2 as a physical blowing agent . Throughout the literatures, it could be found that chain extension had a more significant effect on the viscoelasticity and foamability of semicrystalline polymers without the problems of poor interface and dispersity, compared with other methods.…”

Section: Introductionmentioning

confidence: 99%

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Role of chain extension in the rheological properties, crystallization behaviors, and microcellular foaming performances of poly (butylene adipate‐co‐terephthalate)

Jia

Zhou

Wang

et al. 2018

J of Applied Polymer Sci

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Currently, the fabrication of microcellular semicrystalline polymer foam using supercritical CO2 as a blowing agent constitutes a worldwide interest. In this work, a facile approach of chain extension and batch foaming was proposed to prepare microcellular semicrystalline poly (butylene adipate‐co‐terephthalate) (PBAT) foam using CO2 as a physical blowing agent. With the introduction of chain extender (CE), the weight‐average molecular weight and gel fraction of PBAT samples increased; their crystallization temperature increased from 74.2 to 86.9 °C and their viscoelasticity was improved greatly. Microcellular PBAT foams with the cell size <4 μm and the cell density more than 1010 cells cm−3 were fabricated successfully. With increasing concentration of CE, the cell density and volume expansion ratio (VER) of various PBAT foams increased from 3.4 × 1010 to 8.7 × 1010 cells cm−3 and from 1.5 to 2.0 times, respectively. With increasing foaming temperature, the cell size and VER increased and the cell density decreased. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47322.

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Introduction of stereocomplex crystallites of PLA for the solid and microcellular poly(lactide)/poly(butylene adipate-co-terephthalate) blends

Abstract: The introduced PLA stereocomplex could enhance the melting strength of PLLA/PBAT blends efficiently. The microcellular morphology of PLLA/PBAT foams with PDLA exhibited decreased average cell size and increased cell density.

Cited by 59 publications

References 47 publications

Blends of poly(butylene adipate-co-terephthalate) (PBAT) and stereocomplex polylactide with improved rheological and mechanical properties

Blends of poly(butylene adipate-co-terephthalate) (PBAT) and stereocomplex polylactide with improved rheological and mechanical properties

Simple and feasible strategy to fabricate microcellular poly(butylene succinate) foams by chain extension and isothermal crystallization induction

Role of chain extension in the rheological properties, crystallization behaviors, and microcellular foaming performances of poly (butylene adipate‐co‐terephthalate)

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