Performance comparison of four kinds of straw/PLA/PBAT wood plastic composites

Feng, Jianan; Zhang, Weixing; Wang, Lei; He, Chunxia

doi:10.15376/biores.15.2.2596-2604

Cited by 32 publications

(42 citation statements)

References 21 publications

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“…As shown in Figure (Table S3), the tensile properties of the PBAT composite films with different amounts of EW120 added were still inferior to that of pure PBAT and decreased with the increase of EW120 content. This phenomenon is common in other PBAT composite plastic with biomass as filler. ,, The biodegradable plastic for commercial application requires compliance with the local government regulations. China, as a major consumer of biodegradable plastic, issued a national standard for biodegradable blow film (GB/T 29646-2013 Modified biodegradable polyester used for blown film).…”

Section: Resultsmentioning

confidence: 98%

“…Polymer plastics are widely used in the world and have profound impact on human life due to their excellent performance and various application fields. − However, decades of intemperate use and disposal of nondegradable polymer material have resulted in a massive accumulation of plastic in nature, posing a serious threat to the environment. , Increasing attention to environmental concerns has been motivating the replacement of nondegradable plastics with renewable and biodegradable polymers, especially in the applications with a short service period, such as packaging and mulch. − Biodegradable polymers have the ability to be completely degraded by microorganisms after being disposed in natural environments. − …”

Section: Introductionmentioning

confidence: 99%

“…Wood, as a virgin lignocellulose, is cheaper and more accessible than lignin and cellulose. Researchers have also investigated a variety of wood plastic composites by adopting lignocellulose, such as spruce wood flour, , pine wood flour, rubber wood sawdust, and crop straw, to serve as filler in a biodegradable polymer matrix. Nevertheless, these wood-plastic composites exhibit extremely low elongation at break (≤5%) even with interfacial modifications, which resulted from the limited compatibility and poor dispersion between the lignocellulose and polyester matrix, restricting the ductility and flexibility of the resultant composites .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sustainable Wood-Based Poly(butylene adipate-co-terephthalate) Biodegradable Composite Films Reinforced by a Rapid Homogeneous Esterification Strategy

Wang

Xiong

et al. 2022

ACS Sustainable Chem. Eng.

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Cellulosic biomass is an abundant renewable resource that is suitable as a filler for commercial polyesters to reduce the cost of biodegradable plastics. However, the limited miscibility of lignocelluloses and polyesters results in the poor tensile properties and competitiveness of the composites. Herein, wood-based biodegradable composite films with applicable mechanical properties were directly fabricated by blending chemically modified wood meal with poly(butylene adipate-co-terephthalate) (PBAT) matrix. Wood meal was efficiently dissolved and modified by a rapid (1 h) homogeneous esterification reaction with lauryl chloride in an ionic liquid under a microwave-assisted condition. The esterified wood offered good thermoplastic and hydrophobic characteristics and processability, and it can be better melt-blended with PBAT. The prepared wood-based PBAT composite films exhibited acceptable tensile properties (17.0 MPa and 452.7%) under a high addition ratio (40%) of esterified wood. The characterizations of chemical structure, morphology, and thermal properties of the composites revealed that the uniform dispersion and excellent compatibility between esterified wood and PBAT boosted the final mechanical properties of the composite films. This work offers a rapid route to produce economically competitive biodegradable composite films.

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sustainable Wood-Based Poly(butylene adipate-co-terephthalate) Biodegradable Composite Films Reinforced by a Rapid Homogeneous Esterification Strategy

Wang

Xiong

et al. 2022

ACS Sustainable Chem. Eng.

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“…The absorption peak of hydroxyl group was from 3500 to 3300 cm −1 , and that of the carbonyl group was from 1850 to 1650 cm −1 . [ 37–39 ] The absorption peaks of hydroxyl and carbonyl groups in the PLA composites were significantly enhanced after degradation, indicating that the number of hydroxyl and carbonyl groups in the PLA composites increased. Although PLA composites did not directly contact with water, PLA and plant fiber in the composites would still hydrolyze.…”

Section: Resultsmentioning

confidence: 99%

Degradation of wheat straw/polylactic acid composites by Aspergillus niger

Chai

Liu

et al. 2022

Polymer Composites

Self Cite

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Polylactic acid has good biodegradability and it is dosage is increasing. Therefore, the degradation of PLA has become a new problem that needs serious management. In this study, the spores of Aspergillus niger were inoculated onto wheat straw/PLA composites containing different contents of sodium alginate, and the mass loss and characterization (microstructure, fourier transform infrared spectroscopy, thermal properties, and X‐ray diffraction) of the composites were detected. The objective was to explore the possibility of degradation of PLA composites by A. niger and the effect of sodium alginate on the degradability of PLA composites. The results showed that when the amount of sodium alginate was 3% and 6%, the mass loss rate of the composites only increased at the initial stage of degradation. However, when the amount of sodium alginate was 9%, the mass loss rate of the composites was significantly increased. It was found that A. niger could colonize the surface of the composites and cause cracks and depressions on the surface by morphological observation. The infrared spectral curve showed that the number of hydroxyl and carbonyl groups in the composites increased after degradation. According to the thermogravimetric curve of the composites, the pyrolysis temperature of the composites with sodium alginate content of 9% increased and the residual mass decreased after degradation. When the amount of sodium alginate was 9%, the crystallinity of the composites was greatly reduced, and it is crystallization zone was easier to degrade compared with other treatments. The results would provide a theoretical support for the rapid degradation of PLA composites.

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“…In view of the above, the properties of different components of CSF have been studied, which can be used as reinforcing fiber to form new composite materials with PLA. It can not only improve the disadvantages of PLA in terms of poor mechanical properties and high cost, but also improve the utilization value of CSF more efficiently, making it widely used in food packaging, construction materials and furniture [ 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber

Wang

Sun

et al. 2022

IJMS

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In recent years, under the pressure of resource shortage and white pollution, the development and utilization of biodegradable wood-plastic composites (WPC) has become one of the hot spots for scholars’ research. Here, corn straw fiber (CSF) was chosen to reinforce a poly(lactic acid) (PLA) matrix with a mass ratio of 3:7, and the CSF/PLA composites were obtained by melt mixing. The results showed that the mechanical properties of the corn straw fiber core (CSFC) and corn straw fiber skin (CSFS) loaded PLA composites were stronger than those of the CSFS/PLA composites when the particle size of CSF was low. The tensile strength and bending strength of CSFS/CSFC/PLA are 54.08 MPa and 87.24 MPa, respectively, and the elongation at break is 4.60%. After soaking for 8 hours, the water absorption of CSF/PLA composite reached saturation. When the particle size of CSF is above 80 mesh, the saturated water absorption of the material is kept below 7%, and CSF/PLA composite has good hydrophobicity, which is mainly related to the interfacial compatibility between PLA and CSF. By observing the microstructure of the cross section of the CSF/PLA composite, the research found that the smaller the particle size of CSF, the smoother the cross section of the composite and the more unified the dispersion of CSF in PLA. Therefore, exploring the composites formed by different components of CSF and PLA can not only expand the application range of PLA, but also enhance the application value of CSF in the field of composites.

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Performance comparison of four kinds of straw/PLA/PBAT wood plastic composites

Cited by 32 publications

References 21 publications

Sustainable Wood-Based Poly(butylene adipate-co-terephthalate) Biodegradable Composite Films Reinforced by a Rapid Homogeneous Esterification Strategy

Sustainable Wood-Based Poly(butylene adipate-co-terephthalate) Biodegradable Composite Films Reinforced by a Rapid Homogeneous Esterification Strategy

Degradation of wheat straw/polylactic acid composites by Aspergillus niger

Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber

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