Effect of multi-functional epoxy chain extender on the weathering resistance performance of Poly(butylene adipate-co-terephthalate) (PBAT)

Tang, Duo; Zhang, Caili; Weng, Yunxuan

doi:10.1016/j.polymertesting.2021.107204

Cited by 33 publications

(21 citation statements)

References 38 publications

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“…Similar observation was also found by Kijchavengkul et al 25 after 8 weeks of solar exposure. The ester group cleavage occurred due to chain scission according to Norrish type I/II reactions under weathering condition, which was similar to the finding by Tang et al 48 for PBAT with chain extender after 600 h under artificial accelerated weathering. The reduction in intensity also occurred at peaks 2955, 2850, and 1082 cm −1 corresponding to the CH stretching of methylene group.…”

Section: Resultssupporting

confidence: 88%

Effect of different starch contents on physical, morphological, mechanical, barrier, and biodegradation properties of tapioca starch and poly(butylene adipate‐co‐terephthalate) blend film

Akhir

Zubir

Jaafar

2022

Polymers for Advanced Techs

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Study on degradation behaviors of biodegradable poly(butylene adipate‐co‐terephthalate) (PBAT) blended with different compositions of thermoplastic starch (TPS) under soil burial and natural weathering environments is vital in order to predict the product service‐life and planning for in situ biodegradation after product disposal. In this article, different compositions of TPS (0%, 20%, 40%, 50%, and 60%) were compounded with PBAT using single screw extruder. The samples were characterized for their tensile properties, fractured surface morphology, water barrier and surface hydrophorbicity properties in order to investigate the effect of starch fractions in PBAT blends. The degradation behavior under natural weathering and soil burial conditions was also determined during the 9 months duration by observing the change of physical appearance, weight loss, surface morphology, chemical structural, and tensile properties. The findings showed that the addition of TPS (20%, 40%, 50%, and 60%) had led to a reduction in tensile strength (41.47%, 60.53%, 63.43%, and 68.53%), and reduction in elongation at break (42.92%, 92.1%, 92.23%, and 93.22%, respectively) and water barrier properties. The findings also showed that there were distinct degradation behavior under both conditions. Upon exposure to natural weathering, photodegradation and Norrish type I & II occurred whereas under the soil burial condition, hydrolytic, and enzymatic degradation take places. Sample with the highest starch contents underwent the highest weight loss and reduction in tensile properties under both environments. The findings in this study are useful in order to investigate the feasibility of PBAT/Tapioca starch blends for biodegradable plastic film for various industrial applications especially in packaging and agricultural mulch.

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Section: Resultssupporting

confidence: 88%

Effect of different starch contents on physical, morphological, mechanical, barrier, and biodegradation properties of tapioca starch and poly(butylene adipate‐co‐terephthalate) blend film

Akhir

Zubir

Jaafar

2022

Polymers for Advanced Techs

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“…4,5 As one of the most produced biodegradable plastics, poly(butylene adipate-co-terephthalate) (PBAT) exhibits high elongation at break, excellent flexibility and good processability comparable to polyethylene, 6,7 thus showing great application prospect in agriculture and packaging. [8][9][10] However, the disadvantages of high cost, [11][12][13][14] short shelf life, 8,15,16 poor weather and water resistance [17][18][19] and poor gas barrier properties 20,21 still limit its wide application.…”

Section: Introductionmentioning

confidence: 99%

Lignin modified PBAT composites with enhanced strength based on interfacial dynamic bonds

Huang

Liu

et al. 2022

J of Applied Polymer Sci

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Poly(butylene adipate‐co‐terephthalate) (PBAT) is a type of synthetic biodegradable thermoplastic copolyester with comparable mechanical properties to polyethylene, but the application of PBAT is limited by factors such as high cost, short shelf life, poor weather and water resistance. In order to develop PBAT composites with high performance and low cost, lignin‐modified PBAT biocomposites with enhanced tensile strength were prepared via in‐situ construction of interfacial dynamic bonds. Zinc stearate and epoxy soybean oil were introduced as the interfacial modifiers to construct dynamic bonds between lignin and PBAT, so as to improve the interfacial compatibility. The results demonstrated that the lignin/PBAT biocomposite with interface modifiers reached the maximum tensile strength of 36.7 MPa and an elongation at break of 725.3% at the lignin content of 5 wt%, with the tensile strength achieved 5% improvement on the basis of pure PBAT (34.9 MPa and 717.6%). When the lignin content was increased to 10 wt%, the lignin/PBAT biocomposite with interfacial modifiers still maintained the tensile strength of 35.4 MPa and the elongation at break of 627.8%, which was 82% and 31% higher than that of the directly compounded sample without interfacial modifiers, respectively. Even when the content of lignin loading increased to 20 and 30 wt%, the mechanical properties of the composites were still significantly improved by adding modifiers. The hydrophobicity of the composite was also improved after in‐situ interfacial modification. The strategy demonstrated in this work provides an effective reference for the development of lignin/PBAT composites with high performance but low cost.

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“…Moreover, a multi-functional epoxy chain extender was also used as compatibilizer to enhance the interfacial effect by reacting with the terminated hydroxyl groups of PLA and PBAT. 18–20 The Joncryl ADR chain extender synthesized by BASF has excellent compatibilization effect on biodegradable polyester. 21,22 Al-Itry et al 23 studied the compatibilization effect of Joncryl ADR chain extender on PLA/PBAT (80/20) blend and demonstrated that the in situ compatibilization reaction of ADR significantly improved the compatibility between PBAT and PLA phases.…”

Section: Introductionmentioning

confidence: 99%

Effect of chain extender on morphologies and properties of PBAT/PLA composites

Sun¹,

Huang²,

Luo³

et al. 2021

Journal of Thermoplastic Composite Materials

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Biodegradable poly(butylene adipate-co-terephthalate)/poly(lactic acid) (PBAT/PLA) composites were prepared by melt blending, and chain extender was used to improve the compatibility of PBAT/PLA blends through the chemical reaction. The influence of PLA and chain extender contents on mechanical properties, morphology, and rheological properties of PBAT/PLA composites was systematically investigated. The results revealed that the Young’s modulus and stress values gradually increased under the same strain, whereas the elongation at break decreased with the increase of chain extender content for PBAT/PLA (80/20) composites. Noteworthy, the presence of chain extender improves the interfacial compatibility between PLA and PBAT phases. At the chain extender content of 0.4, 0.6, and 0.8 wt.%, the extensional viscosity of the composites exhibited an increasing trend, whereas an obvious strain-hardening phenomenon emerged in the uniaxial extensional curves.

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Effect of multi-functional epoxy chain extender on the weathering resistance performance of Poly(butylene adipate-co-terephthalate) (PBAT)

Cited by 33 publications

References 38 publications

Effect of different starch contents on physical, morphological, mechanical, barrier, and biodegradation properties of tapioca starch and poly(butylene adipate‐co‐terephthalate) blend film

Effect of different starch contents on physical, morphological, mechanical, barrier, and biodegradation properties of tapioca starch and poly(butylene adipate‐co‐terephthalate) blend film

Lignin modified PBAT composites with enhanced strength based on interfacial dynamic bonds

Effect of chain extender on morphologies and properties of PBAT/PLA composites

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