IF 3.7 3区化学

e-Polymers Pub Date : 2024-09-06 DOI: 10.1515/epoly-2023-0114

Manickam Ramesh, Kanakaraj Niranjana, Ramasamy Bhoopathi, Lakshminarasimhan Rajeshkumar

{"title":"Additive manufacturing (3D printing) technologies for fiber-reinforced polymer composite materials: A review on fabrication methods and process parameters","authors":"Manickam Ramesh, Kanakaraj Niranjana, Ramasamy Bhoopathi, Lakshminarasimhan Rajeshkumar","doi":"10.1515/epoly-2023-0114","DOIUrl":"https://doi.org/10.1515/epoly-2023-0114","url":null,"abstract":"In recent years, additive manufacturing (AM) has seen extensive exploitation in the research areas for the processing of fiber-reinforced polymer composites (FRPCs). Existing reviews on AM have recommended either sustainable production methods or have introduced new processing methodologies. A relationship between materials used, manufacturing processes, process parameters, and their properties is essential in any manufacturing process. Accordingly, this review focuses on the manufacturing of FRPCs in relation to process parameters and properties of the polymer composites. Various studies dealt with the lightweight materials and parts that were manufactured through AM and which could retain the mechanical and other properties without compromising the strength and weight of the final product. The technologies involved in the major AM processes and the constituents used for the fabrication of FRPC parts, their advantages, and drawbacks are also deliberated. This review combines the material selection for AM technologies along with the choice of proper AM technique for printing FRPCs. This review further illustrates the recent research and technology that aims at embracing FRPCs into a circular economy. In summary, this review opens the door for new opportunities and for meeting challenges in the manufacturing of FRPCs by AM methodologies.","PeriodicalId":11806,"journal":{"name":"e-Polymers","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142214207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of tannic acid chelating treatment on thermo-oxidative aging property of natural rubber 单宁酸螯合处理对天然橡胶热氧化老化性能的影响

IF 3.7 3区化学

e-Polymers Pub Date : 2024-09-05 DOI: 10.1515/epoly-2024-0036

Chuanyu Wei, Tingting Zheng, Yuhang Luo, Changjin Yang, Yanchan Wei, Shuangquan Liao

引用次数: 0

Normal-hexane treatment on PET-based waste fiber depolymerization process 正己烷处理 PET 废纤维解聚工艺

IF 3.7 3区化学

e-Polymers Pub Date : 2024-09-03 DOI: 10.1515/epoly-2024-0054

Woo Seok Cho, Joon Hyuk Lee, Da Yun Na, Sang Sun Choi

引用次数: 0

Gamma-ray shielding investigation of nano- and microstructures of SnO on polyester resin composites: Experimental and theoretical study 聚酯树脂复合材料上氧化锡纳米和微结构的伽马射线屏蔽研究：实验和理论研究

IF 3.7 3区化学

e-Polymers Pub Date : 2024-06-29 DOI: 10.1515/epoly-2024-0039

Wafa M. Al-Saleh, Haifa M. Almutairi, Khalid Alsafi, Islam M. Nabil, Mohamed Elsafi

{"title":"Gamma-ray shielding investigation of nano- and microstructures of SnO on polyester resin composites: Experimental and theoretical study","authors":"Wafa M. Al-Saleh, Haifa M. Almutairi, Khalid Alsafi, Islam M. Nabil, Mohamed Elsafi","doi":"10.1515/epoly-2024-0039","DOIUrl":"https://doi.org/10.1515/epoly-2024-0039","url":null,"abstract":"Based on the experimental and theoretical radiation attenuation, this study produced and tested a composite material made of polyester reinforced with SnO at varied concentrations and abbreviated as Pol-SnOx, where x = 0–60% with steps of 20 wt% Also, the polyester samples were doped with SnO of different particle sizes: Micro, Nano, and 50% Micro/50% Nano mix to investigate the effect of the particle size on the radiation attenuation performance. In the photon energy range of 0.015–15 MeV, their radiation shielding properties were empirically determined using an HPGe detector and theoretically determined using Phy-X/PSD software. The linear attenuation coefficient (LAC) values dropped from 1.361 to 0.022 cm−1 for Pol-SnO0, from 13.611 to 0.033 cm−1 for Pol-SnO20, from 31.700 to 0.049 cm−1 for Pol-SnO40, and from 61.076 to 0.076 cm−1 for Pol-SnO60 in the photon energy (Eγ) range from 0.015 to 15 MeV. The LAC values of the fabricated Pol-SnOx samples increased as the SnO concentrations increased. Also, the addition of 50% Micro/50% Nano mix particle size of the SnO to the polyester significantly increased the values of the LAC. The percentages of LAC improvement of SnO nano-particles were 16.625%, 13.236%, 8.714%, and 7.935% at the Eγ values of 0.059, 0.661, 1.173, and 1.332 MeV, respectively. Also, the LAC values were enhanced by adding SnO containing 50% Micro/50% Nano mix particles by 19.097%, 15.271%, 9.854%, and 9.071% at the Eγ values of 0.059, 0.661, 1.173, and 1.332 MeV, respectively, when compared to microparticles. The addition of 50% Micro/50% Nano Mix of SnO with 60% content to the polyester showed the highest LAC and radiation protection efficiency and lowest half-value layer and transmission factor among the other samples due to increased SnO doping and interparticle distances of the Micro and Nano mix.","PeriodicalId":11806,"journal":{"name":"e-Polymers","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study on impact and flexural behaviors of CFRP/aluminum-honeycomb sandwich panel CFRP/ 铝蜂窝夹芯板冲击和弯曲行为实验研究

IF 3.7 3区化学

e-Polymers Pub Date : 2024-06-29 DOI: 10.1515/epoly-2024-0044

Shicheng Zhao, Xuan Gao, Jiajun Lou, Cuilong Liu, Youping Liu, Ye Wu

引用次数: 0

Preparation of lightweight PBS foams with high ductility and impact toughness by foam injection molding 通过泡沫注射成型制备具有高延展性和冲击韧性的轻质 PBS 泡沫

IF 3.7 3区化学

e-Polymers Pub Date : 2024-06-29 DOI: 10.1515/epoly-2024-0034

Jiangbin Xu, Jinfu Xing, Mei Luo, Tingyu Li, Bujin Liu, Xiangbu Zeng, Tuanhui Jiang, Xian Wu, Li He

{"title":"Preparation of lightweight PBS foams with high ductility and impact toughness by foam injection molding","authors":"Jiangbin Xu, Jinfu Xing, Mei Luo, Tingyu Li, Bujin Liu, Xiangbu Zeng, Tuanhui Jiang, Xian Wu, Li He","doi":"10.1515/epoly-2024-0034","DOIUrl":"https://doi.org/10.1515/epoly-2024-0034","url":null,"abstract":"Lightweight and highly tough polymer foams play a crucial role in resource conservation and environmental protection. One such biodegradable material that has garnered attention for its excellent processability and mechanical properties is polybutylene succinate (PBS). However, achieving PBS foams with superior mechanical properties remains a significant challenge. In this study, we prepared PBS foams with higher ductility and impact toughness using foam injection molding. The improved ductility of these foams can be attributed to the highly oriented cellular structure along the direction of the tensile load, transforming from regular circular shapes to tubular ones. This cellular structure effectively blunts crack tips, thereby enhancing impact performance. When the mold-opening distance is 0.4 mm, the fracture elongation of PBS foams is 486%, the tensile toughness is 4,586 MJ·cm−3, and the impact strength is 12.73 kJ·m−2. These values are 98%, 53%, and 29% higher than those of unfoamed PBS, respectively. As the mold-opening distance increases, the relative density of PBS foams decreases, leading to a reduction in fracture elongation, tensile toughness, and impact strength. Interestingly, the specific impact strength of PBS foams consistently surpasses that of unfoamed PBS, and increases proportionally to the mold-opening distance.","PeriodicalId":11806,"journal":{"name":"e-Polymers","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141515276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of cardanol-based curing agent for underwater drainage pipeline repairs 制备用于水下排水管道修复的卡旦醇基固化剂

IF 3.7 3区化学

e-Polymers Pub Date : 2024-06-29 DOI: 10.1515/epoly-2023-0190

Yu Li, Guoqing Wang, Yali Guo, Ning Fang, Jingxiang Li, Zheng Li, Junhan Li

引用次数: 0

Design, synthesis, characterization, and adsorption capacities of novel superabsorbent polymers derived from poly (potato starch xanthate-graft-acrylamide) 由聚（马铃薯淀粉黄原酸盐-接枝-丙烯酰胺）衍生的新型超吸附聚合物的设计、合成、表征和吸附能力

IF 3.7 3区化学

e-Polymers Pub Date : 2024-06-22 DOI: 10.1515/epoly-2024-0040

Yongqi Yang, Yongxin Liu, Sisi Zhang, Zhu Cheng, Youjun Yan, Jun Liu, Meng Lian, Fangfang Liu

{"title":"Design, synthesis, characterization, and adsorption capacities of novel superabsorbent polymers derived from poly (potato starch xanthate-graft-acrylamide)","authors":"Yongqi Yang, Yongxin Liu, Sisi Zhang, Zhu Cheng, Youjun Yan, Jun Liu, Meng Lian, Fangfang Liu","doi":"10.1515/epoly-2024-0040","DOIUrl":"https://doi.org/10.1515/epoly-2024-0040","url":null,"abstract":"Novel superabsorbent polymers (SAPs) were synthesized by performing aqueous solution graft copolymerization of potato starch xanthate and partially hydrolyzed acrylamide using N,N′-methylene-bis-acrylamide as a crosslinker and potassium persulfate as an oxidant at 35–45°C. Various factors that influence the water absorption of SAPs were studied in detail, and the optimum formulation ratio was determined via orthogonal experiments. Several spectroscopic techniques, including scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, and transmission electron microscopy, were used to determine the structure of the SAPs. In addition, adsorption experiments were carried out with various heavy metal ions, including divalent copper ions, zinc ions, nickel ions, cobalt ions, cadmium ions, and lead ions. Experiments showed that the prepared SAP has a high adsorption performance (>48 mg·g−1). Thus, these materials are expected to have important applications in the removal of heavy metal ions and the separation of dyes in aquatic environments.","PeriodicalId":11806,"journal":{"name":"e-Polymers","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141506590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Robust biaxially stretchable polylactic acid films based on the highly oriented chain network and “nano-walls” containing zinc phenylphosphonate and calcium sulfate whisker: Superior mechanical, barrier, and optical properties 基于高度定向链网络和含有苯基膦酸锌和硫酸钙晶须的 "纳米壁 "的坚固双轴可拉伸聚乳酸薄膜：卓越的机械、阻隔和光学性能

IF 3.7 3区化学

e-Polymers Pub Date : 2024-05-31 DOI: 10.1515/epoly-2024-0032

Shi-Juan Ding, Ling-Na Cui, Yue-Jun Liu

{"title":"Robust biaxially stretchable polylactic acid films based on the highly oriented chain network and “nano-walls” containing zinc phenylphosphonate and calcium sulfate whisker: Superior mechanical, barrier, and optical properties","authors":"Shi-Juan Ding, Ling-Na Cui, Yue-Jun Liu","doi":"10.1515/epoly-2024-0032","DOIUrl":"https://doi.org/10.1515/epoly-2024-0032","url":null,"abstract":"It is urgent to acquire a feasible strategy for balancing the strength and ductility of polylactic acid (PLA) in the application of biodegradable packaging materials. In this study, a new strategy is provided to enhance mechanical, barrier, and optical properties by the synergetic effect of manipulating the amorphous chain entanglement network and constructing the “nano- walls” of highly aligned calcium sulfate whisker (CSW), zinc phenylphosphonate (PPZn), and well-defined crystals via biaxial stretching. PPZn is verified as a nucleator to accelerate the crystallization rate and induce α-form crystals. CSW is regarded as a supporting skeleton to strengthen the entanglement density of the chain network. The extensional stress, which is induced by biaxial stretching, regulates the amorphous chain entanglement network and facilitates the chain orientation. As a result, the synergetic structure displays an outstanding capacity for improving the mechanical, barrier, and optical properties of PLA. Compared to the PLA film, the biaxially stretched PLA/PPZn/CSW films exhibit high strength, excellent ductility, and superior crystallinity, which are significantly increased by up to 53.2%, 381.3%, and 748.9%, respectively. And their gas and water vapor barrier properties remarkably increased by 65.39% and 73.11%, respectively. The optical property with a haze value of 52.4% and good transmittance of 97.4% is also obtained via the synergetic effect. With the excellent comprehensive properties of PLA films, this new strategy explores a new field in environmentally friendly packaging materials and is relevant to future work.","PeriodicalId":11806,"journal":{"name":"e-Polymers","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141190471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

ARGET ATRP of styrene with low catalyst usage in bio-based solvent γ-valerolactone 苯乙烯在生物基溶剂 γ-戊内酯中的 ARGET ATRP，催化剂用量少

IF 3.7 3区化学

e-Polymers Pub Date : 2024-05-31 DOI: 10.1515/epoly-2024-0022

Qianqian Zhu, Tianchen Song, Jiaxin Zhao, Gang Gao, Yixin Xiang, Jiangang Gao, Xianrong Shen

{"title":"ARGET ATRP of styrene with low catalyst usage in bio-based solvent γ-valerolactone","authors":"Qianqian Zhu, Tianchen Song, Jiaxin Zhao, Gang Gao, Yixin Xiang, Jiangang Gao, Xianrong Shen","doi":"10.1515/epoly-2024-0022","DOIUrl":"https://doi.org/10.1515/epoly-2024-0022","url":null,"abstract":"The application of bio-based solvents for living radical polymerization has been a hot topic in recent year. In this article, γ-valerolactone (GVL), a bio-based solvent as green media for ARGET atom transfer radical polymerization (ATRP) of styrene (St) were investigated. We first conducted polymerization of St in γ-valerolactone using copper(ii) bromide as the catalyst, tris(2-pyridylmethyl) amine as the ligand, and only sodium ascorbate as reducing agent. The polymerization achieved moderate conversion; however, the controllability of polymerization was not very good, providing a polymer with a broad molecular weight distribution (M w/M n > 1.30). When sodium carbonate is introduced, excellent results were obtained providing high yields and low M w/M n values under very low catalyst usage (∼5 ppm). 1H NMR spectroscopy, chain extension, and MALDI–MS experiments confirmed the final polymer chains with high fidelity. The use of GVL solvent opens a new route for the easy synthesis of PS through ARGET ATRP with low catalyst usage conditions.","PeriodicalId":11806,"journal":{"name":"e-Polymers","volume":null,"pages":null},"PeriodicalIF":3.7,"publicationDate":"2024-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141190427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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