Effect of surface property of halloysite on the crystallization behavior of PBAT

Li, Xujuan; Tan, Daoyong; Xie, Lan; Sun, Hongjuan; Sun, Shi-Yong; Zhong, Gan‐Ji; Ren, Penggang

doi:10.1016/j.clay.2018.02.005

Cited by 78 publications

(40 citation statements)

References 50 publications

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“…XRD was used to examine the crystalline components of PBAT and the PBAT/chitin composites (Figure ). PBAT exhibits five characteristic diffraction peaks at 16.3°, 17.4°, 20.2°, 23.1°, and 25.0°, corresponding to diffraction on (011), (010), (110), (100), and (111) planes, respectively . The observation of these diffraction peaks is consistent with PBAT being a semicrystalline polymer .…”

Section: Resultssupporting

confidence: 58%

Biodegradable Poly(butylene adipate‐co‐terephthalate) composites reinforced with bio‐based nanochitin: Preparation, enhanced mechanical and thermal properties

Meng

Xie

Waterhouse

et al. 2019

J of Applied Polymer Sci

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The accumulation of nonbiodegradable petrochemical-based polymers in the environment motivates the development and use of low-cost, eco-friendly, and biodegradable polymers. A series of biodegradable poly(butylene adipate-co-terephthalate) composites reinforced by sustainably sourced nanochitin were successfully prepared using melt blending and compression molding methods. Structural, thermal, and mechanical characterizations of poly(butylene adipate-co-terephthalate) (PBAT)/nanochitin composites were performed. SEM revealed that the nanochitin was uniformly dispersed throughout the PBAT matrix at low contents (<2 wt %), while DSC analyses revealed a corresponding increase in the crystallinity (32.6% enhancement) of the PBAT matrix. The tensile strength and elongation at break of the PBAT/nanochitin composite containing 0.5 wt % nanochitin were higher by 82.5 and 64.2%, respectively, compared with pristine PBAT. The Chitin-0.5 composite also showed improved thermal stability compared with PBAT (the char yield improved by 8%) due to the uniform dispersion of nanochitin in the PBAT matrix. The enhanced performance of the PBAT/nanochitin composites, prepared without an added compatibilizer, informs the development of improved biodegradable PBATbased polymers.

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Section: Resultssupporting

confidence: 58%

Biodegradable Poly(butylene adipate‐co‐terephthalate) composites reinforced with bio‐based nanochitin: Preparation, enhanced mechanical and thermal properties

Meng

Xie

Waterhouse

et al. 2019

J of Applied Polymer Sci

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“…As shown in Figure (b), the carbonyl group CO in the ester linkage of PBAT molecular chains represented a strong peak at 1710 cm −1 and a sharp peak at 720 cm −1 was related to the fourth CH 2 group adjoining the carbonyl group in the PBAT molecular chains . Two strong absorption bands appeared at 1103 cm −1 and 1269 cm −1 , associating with the CO symmetric stretching vibrations in aromatic acid of PBAT molecular chains . The peaks around 2958 cm −1 in the FTIR spectra of torqued PBAT and CE‐PBAT samples represented the stretching vibrations of alcohol OH.…”

Section: Resultsmentioning

confidence: 90%

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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“…Moreover, the absorption peaks of PBAT at 1394 and 1409 cm −1 corresponded to the plane bending band of trans CH 2 , and the characteristic peaks at 1103 and 1268 cm −1 , which were corresponding to the symmetric stretching band of CO in aromatic acid. [ 44‐46 ] Further, the obvious peaks at 2851 cm −1 for CH 2 symmetric stretching and 2915 cm −1 for CH 2 asymmetric stretching of EGMA were observed in CPBAT‐3, CPBAT‐5, and CPBAT‐7 (Figure 2B) [ 47 ] while the characteristic absorption peak of epoxy group at 720 cm −1 in the spectrum of EGMA was disappeared in all spectra of CPBAT specimens (Figure 2C). [ 48 ] These results indicated that the occurrence of chain extension reaction between the epoxy group of EGMA and the terminal group (OH and COOH) of PBAT, and the possible mechanism of chain extension reaction between PBAT and EGMA was shown in Figure 3.…”

Section: Resultsmentioning

confidence: 99%

An innovative strategy to regulate bimodal cellular structure in chain extended poly(butylene adipate‐co‐terephthalate) foams

Cui

Zhou

Yin

et al. 2020

Vinyl Additive Technology

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A facile and effective approach for manufacturing poly(butylene adipate‐co‐terephthalate) (PBAT) foams with obvious bimodal cellular structure (BCS) was proposed utilizing chain extension and batch supercritical CO2 foaming technology. Ethylene‐glycidyl methacrylate copolymer (EGMA) as crystalline chain extender was selected to modify PBAT. The results of torque tests, differential scanning calorimetry, and rheological performances demonstrated that the melt strength, viscoelasticity, and crystallization properties of PBAT were improved after introducing EGMA. The influences of EGMA content and foaming temperature on the cellular structure of PBAT foams were investigated systematically. By decreasing the foaming temperature, the size of both large and small cells in the bimodal chain extended PBAT‐3 (CPBAT‐3) foams decreased, as well as their BCS became distinct gradually. The BCS in diverse CPBAT foams was successfully controlled via varying EGMA content and foaming temperature. Finally, the formation mechanism of BCS in diverse PBAT foams was presented.

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Effect of surface property of halloysite on the crystallization behavior of PBAT

Cited by 78 publications

References 50 publications

Biodegradable Poly(butylene adipate‐co‐terephthalate) composites reinforced with bio‐based nanochitin: Preparation, enhanced mechanical and thermal properties

Biodegradable Poly(butylene adipate‐co‐terephthalate) composites reinforced with bio‐based nanochitin: Preparation, enhanced mechanical and thermal properties

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

An innovative strategy to regulate bimodal cellular structure in chain extended poly(butylene adipate‐co‐terephthalate) foams

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