Journal of Polymer Engineering最新文献_第7页

Morphologies, structures, and properties on blends of triblock copolymers and linear low-density polyethylene 三嵌段共聚物与线性低密度聚乙烯混合物的形态、结构和性能

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2023-12-08 DOI: 10.1515/polyeng-2023-0167

Ying Wang, Shangfeng Wu, Li-Zhi Liu, Hao Chen, Yuanxia Wang, Lixin Song, Ying Shi

{"title":"Morphologies, structures, and properties on blends of triblock copolymers and linear low-density polyethylene","authors":"Ying Wang, Shangfeng Wu, Li-Zhi Liu, Hao Chen, Yuanxia Wang, Lixin Song, Ying Shi","doi":"10.1515/polyeng-2023-0167","DOIUrl":"https://doi.org/10.1515/polyeng-2023-0167","url":null,"abstract":"Focusing on the study of the phase separation behavior of triblock copolymer and linear low-density polyethylene (LLDPE) systems helps to understand the influence of microstructure on the properties of poly(vinylcyclohexane)-b- poly(ethylene)-b-poly(vinylcyclohexane) (PVCH-PE-PVCH/LLDPE) blends. We prepared a series of blends of LLDPE and PVCH-PE-PVCH and explained their compatibility from the microstructure. The research findings indicate that despite having similar block compositions, PVCH-PE-PVCH with a higher molecular weight exhibits significantly stronger phase separation and crystallization ability compared to PVCH-PE-PVCH with lower molecular weight. In PVCH-PE-PVCH/LLDPE blends, the addition of 10 %, 20 %, and 30 % LLDPE induces earlier crystallization and crystal phase separation of polyethylene (PE) fragments. In addition, compared to the lower molecular weight of PVCH-PE-PVCH, the higher molecular weight of PVCH-PE-PVCH exhibits a higher tendency for independent crystallization and shows significant crystal phase separation during the cooling crystallization process when blended with LLDPE. The PE segments in the lower molecular weight of PVCH-PE-PVCH can more easily enter the nanoscale domain of LLDPE. Impact fracture electron microscopy also reveals better compatibility between the lower molecular weight of PVCH-PE-PVCH and LLDPE compared to the higher molecular weight of PVCH-PE-PVCH. Furthermore, the blends of lower molecular weight of PVCH-PE-PVCH and LLDPE exhibit a greater growth rate in elongation at break.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138581219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Predictive maintenance feasibility assessment based on nonreturn valve wear of injection molding machines 基于注塑机止回阀磨损的预测性维修可行性评估

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2023-11-27 DOI: 10.1515/polyeng-2023-0201

Hao-Hsuan Tsou, Jie-An Lin, Chung-Ching Huang

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Quality monitoring of injection molding based on TSO-SVM and MOSSA 基于TSO-SVM和MOSSA的注塑成型质量监控

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2023-11-27 DOI: 10.1515/polyeng-2023-0168

Wenjie Ding, Xiying Fan, Yonghuan Guo, Xiangning Lu, Dezhao Wang, Changjing Wang, Xinran Zhang

{"title":"Quality monitoring of injection molding based on TSO-SVM and MOSSA","authors":"Wenjie Ding, Xiying Fan, Yonghuan Guo, Xiangning Lu, Dezhao Wang, Changjing Wang, Xinran Zhang","doi":"10.1515/polyeng-2023-0168","DOIUrl":"https://doi.org/10.1515/polyeng-2023-0168","url":null,"abstract":"Based on the tuna swarm optimization-based support vector machine (TSO-SVM) and the multi-objective sparrow search algorithm (MOSSA), this paper proposes a multi-objective optimization approach for injection molding of thin-walled plastic components, addressing the issues of warpage deformation and volume shrinkage that compromise molding quality. Firstly, data samples are obtained based on the Box–Behnken experimental design and computer-aided engineering (CAE) simulation. Subsequently, SVM is employed to build a predictive model between the experimental factors and quality objectives. Additionally, the TSO is applied to optimize the hyperparameters of SVM, aiming to enhance its regression performance and prediction accuracy. Finally, the MOSSA is employed for multi-objective optimization, combined with the CRITIC scoring method for decision-making, to obtain the optimal combination of process parameters. The obtained parameters are then validated through simulation in Moldflow software. After optimization, the warpage deformation is reduced to 0.5085 mm, and the volume shrinkage rate is decreased to 7.573 %, representing a significant reduction of 40.9 % and 18.1 %, respectively, compared to the pre-optimized results. The remarkable improvement demonstrates the effectiveness of the method based on TSO-SVM and MOSSA for the efficient monitoring of the injection molding process.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138528939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Preparation and property evaluation of poly(ε-caprolactone)/polylactic acid/perlite biodegradable composite film 聚ε-己内酯/聚乳酸/珍珠岩可生物降解复合膜的制备及性能评价

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2023-11-27 DOI: 10.1515/polyeng-2023-0200

Hui Li, Zhipeng Ma, Xiaolei Song, Yonggui Li, Xinqun Feng, Bing-Chiuan Shiu, Qian-Yu Yuan

{"title":"Preparation and property evaluation of poly(ε-caprolactone)/polylactic acid/perlite biodegradable composite film","authors":"Hui Li, Zhipeng Ma, Xiaolei Song, Yonggui Li, Xinqun Feng, Bing-Chiuan Shiu, Qian-Yu Yuan","doi":"10.1515/polyeng-2023-0200","DOIUrl":"https://doi.org/10.1515/polyeng-2023-0200","url":null,"abstract":"The feasibility of perlite particles used in poly(ε-caprolactone) (PCL)/poly(lactic acid) (PLA) composite films by melt blending is explored to improve their mechanical property and analyze their antibacterial effect. The effect of perlite content on the mechanical, thermal, hydrophilic, and antibacterial properties of composite films is investigated. Results show that incorporation of 10 wt% perlite in PCL/PLA film improves the tensile strength and hydrophilicity by 1.2 times and 25 %, respectively. After perlite addition, the melting crystallization and glass transition temperature of PCL/PLA film are improved. The presence of perlite also confers antibacterial benefits to the composite film. PLA-based materials are used in the fields of medical materials and food packaging, and their ability to degrade in seawater has been a long-standing goal. In this study, the addition of PCL and perlite not only increases various properties and antibacterial effects, but the blending of inorganic materials and organic materials can destroy the link strength of polymer chain segments of organic materials and help them degrade in seawater. The prepared composite film features broad prospects for the development and application of various fields, such as food packaging and medical materials, reduce white pollution in the ocean.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138543719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Location-controlled crazing in polyethylene using focused electron beams and tensile strain 利用聚焦电子束和拉伸应变在聚乙烯中进行位置控制刻纹

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2023-11-25 DOI: 10.1515/polyeng-2023-0177

Sirorat Toocharoen, Daisuke Yokota, Michihito Suzuki, Masayuki Shimojo

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Research progress of metal organic framework materials in anti-corrosion coating 金属有机骨架材料在防腐涂层中的研究进展

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Journal of Polymer Engineering Pub Date : 2023-11-24 DOI: 10.1515/polyeng-2023-0144

Chengwei Yang, Yin Zhu, Tao Wang, Xu Wang, Yubin Wang

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Effect of gamma irradiation on tensile, thermal and wettability properties of waste coffee grounds reinforced HDPE composites 辐照对废咖啡渣增强HDPE复合材料拉伸、热、润湿性的影响

IF 2 4区工程技术

Journal of Polymer Engineering Pub Date : 2023-11-24 DOI: 10.1515/polyeng-2023-0192

Ahmed Nabil Louahem M’sabah, Nadira Bellili, Badrina Dairi, Nesrine Ammouchi

{"title":"Effect of gamma irradiation on tensile, thermal and wettability properties of waste coffee grounds reinforced HDPE composites","authors":"Ahmed Nabil Louahem M’sabah, Nadira Bellili, Badrina Dairi, Nesrine Ammouchi","doi":"10.1515/polyeng-2023-0192","DOIUrl":"https://doi.org/10.1515/polyeng-2023-0192","url":null,"abstract":"This study investigates the impact of gamma irradiation on the properties of waste coffee grounds (WCG)/high-density polyethylene (HDPE) composites. The composites were manufactured with 20 wt% of unirradiated and irradiated WCG at 10 and 20 kGy doses of gamma radiation. Through the utilization of a two-roll mill followed by a hydraulic press. The properties of the composites were analyzed through several methods, including contact angle measurements, hardness and tensile tests, thermogravimetric analysis (TGA), and scanning electron microscopy (SEM), in order to understand the influence of gamma irradiation. The addition of WCG decreased the tensile strength of the composite. However, gamma irradiation at 10 and 20 kGy led to substantial improvements in thermal stability and tensile strength compared to unirradiated samples. The SEM images showed the alterations within the fiber-matrix interface that corroborated the enhanced tensile properties after the treatment. While FTIR spectra confirmed the changes in functional groups of WCG caused by the irradiation process, gamma irradiation treatment not only increases fiber-matrix adhesion but also significantly improves the water resistance of the composites. These results suggest that gamma irradiation can be used for the modification of agro-waste materials as a beneficial process and the fabrication of high-performance, environmentally friendly composites.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138528918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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An experimental investigation of flame retardancy and thermal stability of treated and untreated kenaf fiber reinforced epoxy composites 处理和未处理的红麻纤维增强环氧复合材料的阻燃性和热稳定性的实验研究

4区工程技术

Journal of Polymer Engineering Pub Date : 2023-11-01 DOI: 10.1515/polyeng-2023-0128

Nivedhitha Durgam Muralidharan, Jeyanthi Subramanian, Sathish Kumar Rajamanickam, Venkatachalam Gopalan

{"title":"An experimental investigation of flame retardancy and thermal stability of treated and untreated kenaf fiber reinforced epoxy composites","authors":"Nivedhitha Durgam Muralidharan, Jeyanthi Subramanian, Sathish Kumar Rajamanickam, Venkatachalam Gopalan","doi":"10.1515/polyeng-2023-0128","DOIUrl":"https://doi.org/10.1515/polyeng-2023-0128","url":null,"abstract":"Abstract Natural fiber reinforced polymeric composites perform poor in mechanical and thermal properties at elevated temperatures due to the cellulose and hemicellulose contents of natural fiber start degrading at elevated temperature. In this research work, flame retardancy and thermal stability of treated and untreated kenaf fiber reinforced epoxy composites have been experimentally investigated and reported. Two composite laminates, one with 6 % NaOH Alkali treated and another with untreated woven kenaf mats, were fabricated by hand lay-up technique followed by compression molding with 40 % fiber weight fractions. Flame retardancy test and various thermal characteristics studies such as thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), heat deflection temperature (HDT), and morphological analysis via scanning electron microscopy (SEM) tests were carried out. The results showed that alkali treated kenaf fiber composite achieved V0 fire retardancy grade. The major weight losses, 86 % and 75.5 % for untreated and treated composites respectively were recorded between 300 °C and 450 °C. 13.6 % increase in HDT was noted for treated composite with 0.25 mm deflection at 0.45 MPa pressure condition. Thus the composite laminate with 6 % NaOH alkali-treated kenaf fiber achieved the best thermal stability with less degradation which is more suitable for automobile and aerospace applications.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135163164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Frontmatter 头版头条

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Journal of Polymer Engineering Pub Date : 2023-11-01 DOI: 10.1515/polyeng-2023-frontmatter10

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Numerical and experimental studies on the influence of gas pressure on particle size during gas-assisted extrusion of tubes with embedded antibacterial particles 气体辅助挤压含抗菌颗粒管材过程中气压对粒径影响的数值与实验研究

4区工程技术

Journal of Polymer Engineering Pub Date : 2023-10-27 DOI: 10.1515/polyeng-2023-0164

Bin Liu, Xingyuan Huang, Shaoyi Ren, Xiaohui Zhang, Shuiquan Chen

{"title":"Numerical and experimental studies on the influence of gas pressure on particle size during gas-assisted extrusion of tubes with embedded antibacterial particles","authors":"Bin Liu, Xingyuan Huang, Shaoyi Ren, Xiaohui Zhang, Shuiquan Chen","doi":"10.1515/polyeng-2023-0164","DOIUrl":"https://doi.org/10.1515/polyeng-2023-0164","url":null,"abstract":"Abstract During the gas-assisted extrusion process of plastic tubes embedded with antibacterial particles, the particles tend to agglomerate. The dispersion effect of these agglomerates using the nozzle-pressure-difference method is significantly influenced by the gas flow state. Therefore, this study establishes the nozzle dispersion model. The gas flow state near the nozzle is simulated and analyzed by using Ansys Fluent software. Gas-assisted extrusion experiments are conducted with different nozzle inlet pressures, and the size distribution of antibacterial particles is observed by using electron microscopy. The simulation results indicate that increasing the nozzle inlet pressure enhances the dispersion effect and expands the effective dispersion area. The experimental results demonstrate that using the nozzle disperses the agglomerates into particles with a diameter of approximately 100 nm. Furthermore, the nanoparticles diameter size decreases with the increase of the inlet pressure, validating the accuracy of the numerical analysis results.","PeriodicalId":16881,"journal":{"name":"Journal of Polymer Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136234067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0