1
|
Fang YG, Lin JY, Zhang YC, Qiu QW, Zeng Y, Li WX, Wang ZY. A reactive compatibilization with the compound containing four epoxy groups for polylactic acid/poly(butylene adipate-co-terephthalate)/thermoplastic starch ternary bio-composites. Int J Biol Macromol 2024; 262:129998. [PMID: 38336326 DOI: 10.1016/j.ijbiomac.2024.129998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 01/16/2024] [Accepted: 02/04/2024] [Indexed: 02/12/2024]
Abstract
How to effectively improve the poor interfacial adhesion between polylactic acid/poly(butylene adipate-co-terephthalate) (PLA/PBAT) matrix and thermoplastic starch (TPS) is still a challenge. Therefore, this work aims to introduce a convenient method to enhance the performance of PLA/PBAT/TPS blend by melt reactive extrusion. Here, using 4,4'-methylene-bis(N,N-diglycidyl-aniline) (MBDG) containing four epoxy groups as a reactive compatibilizer, and respectively using 1-methylimidazole (MI) or triethylenediamine (TD) as a catalyzer, serial PLA/PBAT/TPS ternary bio-composites are successfully prepared via melt reactive extrusion. The results showed that, under the catalysis of organic base, especially MI, the epoxy groups of MBDG can effectively react with hydroxyl and carboxyl groups of PLA/PBAT and hydroxyl groups in TPS to form chain-expanded and cross-linked structures. The tensile strength of the composites is increased by 20.0 % from 21.1 MPa, and the elongation at break is increased by 182.4 % from 17.6 % owing to the chain extension and the forming of cross-linked structures. The molecular weight, thermal stability, crystallinity, and surface hydrophobicity of the materials are gradually improved with the increase of MBDG content. The melt fluidity of the composites is also improved due to the enhancement of compatibility. The obtained PLA/PBAT/TPS materials have the potential to be green plastic products with good properties.
Collapse
Affiliation(s)
- Yong-Gan Fang
- School of Chemistry, South China Normal University, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou, Guangdong 510006, PR China
| | - Jian-Yun Lin
- School of Chemistry, South China Normal University, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou, Guangdong 510006, PR China; Guangdong Esquel Textiles Co., Ltd., Foshan, Guangdong 528500, PR China.
| | - You-Cai Zhang
- School of Chemistry, South China Normal University, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou, Guangdong 510006, PR China
| | - Qi-Wen Qiu
- School of Chemistry, South China Normal University, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou, Guangdong 510006, PR China
| | - Yong Zeng
- School of Chemistry, South China Normal University, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou, Guangdong 510006, PR China
| | - Wen-Xi Li
- School of Chemistry, South China Normal University, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou, Guangdong 510006, PR China
| | - Zhao-Yang Wang
- School of Chemistry, South China Normal University, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou, Guangdong 510006, PR China.
| |
Collapse
|
2
|
Cheng Z, Chen Z, Zhao B, Liao H, Yu T, Li Y. High-performance degradable films of poly(lactic acid)/thermochromic microcapsule composites with thermochromic and energy storage functions via blown film process. Int J Biol Macromol 2022; 220:238-249. [PMID: 35985393 DOI: 10.1016/j.ijbiomac.2022.08.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/09/2022] [Accepted: 08/10/2022] [Indexed: 11/05/2022]
Abstract
In this study, the polylactic acid (PLA)/reversible thermochromic microcapsule (TCM) packaging application film was successfully synthesized by the blown film process. White mineral oil (WMO) was used as a dispersant to prepare PLA/TCM extruded materials with different mass fractions, in which the mass fraction of TCM was up to 20 wt% and the structural, thermal, mechanical, barrier, thermochromic, and heat storage-release properties were evaluated. It was found that WMO had a plasticizing effect, the elongation at break and water vapor transmission rate of the films with the addition of 7 wt% TCM were increased by 533 % and 31.38 %, respectively. For each thermochromic film, significant thermochromic and energy storage release phenomena were observed. For instance, 20 wt% TCM thermochromic film was most effective for prolonging the holding time and suspending the temperature drop rate. In general, thermochromic packaging films with optimized constitutes were successfully synthesized by the blown film process, which provides essential reference significance for the large-scale thermochromic film applications.
Collapse
Affiliation(s)
- Zefei Cheng
- School of Aerospace Engineering and Applied Mechanics, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Zixuan Chen
- School of Aerospace Engineering and Applied Mechanics, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Binbin Zhao
- School of Aerospace Engineering and Applied Mechanics, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Haoran Liao
- School of Aerospace Engineering and Applied Mechanics, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| | - Tao Yu
- School of Aerospace Engineering and Applied Mechanics, Tongji University, 1239 Siping Road, Shanghai 200092, PR China; The Shanghai Key Laboratory of Space Mapping and Remote Sensing for Planetary Exploration, Tongji University, Shanghai 200092, PR China.
| | - Yan Li
- School of Aerospace Engineering and Applied Mechanics, Tongji University, 1239 Siping Road, Shanghai 200092, PR China
| |
Collapse
|
3
|
Toughening and Heat-Resistant Modification of Degradable PLA/PBS-Based Composites by Using Glass Fiber/Silicon Dioxide Hybrid Fillers. Polymers (Basel) 2022; 14:polym14163237. [PMID: 36015493 PMCID: PMC9412549 DOI: 10.3390/polym14163237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/30/2022] [Accepted: 07/31/2022] [Indexed: 11/24/2022] Open
Abstract
In this paper, to enhance the toughness and heat resistance properties of polylactic acid (PLA)/polybutylene succinate (PBS) composites, the PLA/PBS matrix was modified by different glass fiber (GF), GF/SiO2, and GF/(Polyaluminium chloride) PAC fillers. Additionally, the effect of filler type, filler content, components interaction and composite structure on the mechanical and thermal properties of the PLA/PBS composites was researched. The results showed that the addition of GF, GF/SiO2 and GF/PAC make the PLA/PBS composites appear significantly higher mechanical properties compared with the pristine PLA/PBS composite. Among the different inorganic fillers, the 10%GF/1%SiO2 fillers showed excellent strengthening, toughening and heat resistant effects. Compared with the pristine PLA/PBS matrix, the tensile strength, elastic modulus, flexural strength, flexural modulus and Izod impact strength improved by 36.28%, 70.74%, 67.95%, 66.61% and 135.68%, respectively. Considering the above, when the weight loss rate was 50%, the thermal decomposition temperature of the 10%GF/1%SiO2 modified PLA/PBS composites was the highest 412.83 °C and its Vicat softening point was up to 116.8 °C. In a word, the 10%GF/1%SiO2 reinforced PLA/PBS composites exhibit excellent mechanical and thermal properties, which broadens the application of biodegradable materials in specific scenarios.
Collapse
|
4
|
Wang B, Qi Z, Chen X, Sun C, Yao W, Zheng H, Liu M, Li W, Qin A, Tan H, Zhang Y. Preparation and mechanism of lightweight wood fiber/poly(lactic acid) composites. Int J Biol Macromol 2022; 217:792-802. [PMID: 35902018 DOI: 10.1016/j.ijbiomac.2022.07.101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/27/2022] [Accepted: 07/13/2022] [Indexed: 11/26/2022]
Abstract
The high density and poor thermal insulation of traditional wood-plastic composites limited the application in the field of building materials. In this paper, wood fiber (WF) and PLA were used as raw materials and azodicarbonamide was used as the foaming agent. Lightweight WF/PLA composites were prepared by the hot-pressing foaming method, aiming to obtain renewable, low-density material with high strength-to-weight ratio and thermal insulation performance. The results showed that after adding 20 % WF into PLA, the cell morphology was excellent and the cell size was uniform. The magnification reached the minimum value of 0.36 g/cm3 and the foaming magnification was 3.42 times. The impact strength and compressive strength were 3.16 kJ/m3 and 4.12 MPa, its comprehensive mechanical properties were outstanding. The thermal conductivity of foamed materials was 0.110-0.148 (W/m·K), which was significantly lower than that of unfoamed materials and common wood. Its excellent mechanical properties and thermal insulation can be suitable for application in the construction field to replace traditional wood.
Collapse
Affiliation(s)
- Baiwang Wang
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Zhongyu Qi
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Xiaojian Chen
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Ce Sun
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Wenrui Yao
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Hao Zheng
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Mengyao Liu
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Wenlong Li
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Aihang Qin
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Haiyan Tan
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Yanhua Zhang
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China.
| |
Collapse
|
5
|
Qi Z, Wang B, Sun C, Yang M, Chen X, Zheng D, Yao W, Chen Y, Cheng R, Zhang Y. Comparison of Properties of Poly(Lactic Acid) Composites Prepared from Different Components of Corn Straw Fiber. Int J Mol Sci 2022; 23:ijms23126746. [PMID: 35743188 PMCID: PMC9224457 DOI: 10.3390/ijms23126746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/04/2022] [Accepted: 06/15/2022] [Indexed: 02/05/2023] Open
Abstract
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.
Collapse
Affiliation(s)
- Zhongyu Qi
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; (Z.Q.); (B.W.); (C.S.); (M.Y.); (X.C.); (D.Z.); (W.Y.); (Y.C.)
- Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Baiwang Wang
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; (Z.Q.); (B.W.); (C.S.); (M.Y.); (X.C.); (D.Z.); (W.Y.); (Y.C.)
- Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Ce Sun
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; (Z.Q.); (B.W.); (C.S.); (M.Y.); (X.C.); (D.Z.); (W.Y.); (Y.C.)
- Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Minghui Yang
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; (Z.Q.); (B.W.); (C.S.); (M.Y.); (X.C.); (D.Z.); (W.Y.); (Y.C.)
- Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Xiaojian Chen
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; (Z.Q.); (B.W.); (C.S.); (M.Y.); (X.C.); (D.Z.); (W.Y.); (Y.C.)
- Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Dingyuan Zheng
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; (Z.Q.); (B.W.); (C.S.); (M.Y.); (X.C.); (D.Z.); (W.Y.); (Y.C.)
- Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Wenrui Yao
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; (Z.Q.); (B.W.); (C.S.); (M.Y.); (X.C.); (D.Z.); (W.Y.); (Y.C.)
- Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Yang Chen
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; (Z.Q.); (B.W.); (C.S.); (M.Y.); (X.C.); (D.Z.); (W.Y.); (Y.C.)
- Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
| | - Ruixiang Cheng
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; (Z.Q.); (B.W.); (C.S.); (M.Y.); (X.C.); (D.Z.); (W.Y.); (Y.C.)
- Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
- Correspondence: (R.C.); (Y.Z.)
| | - Yanhua Zhang
- Engineering Research Center of Advanced Wooden Materials, Ministry of Education, Harbin 150040, China; (Z.Q.); (B.W.); (C.S.); (M.Y.); (X.C.); (D.Z.); (W.Y.); (Y.C.)
- Key Laboratory of Bio-Based Material Science and Technology, Northeast Forestry University, Ministry of Education, Harbin 150040, China
- Correspondence: (R.C.); (Y.Z.)
| |
Collapse
|