Journal of Applied Polymer Science最新文献_第2页

Cyclic Compression Response and Strain Rate Sensitivity of Graphene Oxide-Reinforced Epoxy Nanocomposites 氧化石墨烯增强环氧纳米复合材料的循环压缩响应和应变速率敏感性

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-04-07 Epub Date: 2026-02-23 DOI: 10.1002/app.70615

Ozgen Colak, Okan Bakbak

{"title":"Cyclic Compression Response and Strain Rate Sensitivity of Graphene Oxide-Reinforced Epoxy Nanocomposites","authors":"Ozgen Colak, Okan Bakbak","doi":"10.1002/app.70615","DOIUrl":"https://doi.org/10.1002/app.70615","url":null,"abstract":"<div>\u0000 \u0000 <p>Compressive loading–unloading and oligo cyclic tests were performed on neat epoxy and GO-epoxy nanocomposites containing 0.1 and 0.5 wt% graphene oxide (GO) to investigate the effects of GO content and strain rate on modulus evolution and damage development. The tests targeted the elastic, yield, and viscoplastic regimes while minimizing low-cycle fatigue. The strain rate sensitivity factor and damage parameter, which are defined considering the initial elasticity modulus and modulus during unloading, were calculated for neat epoxy and GO-epoxy nanocomposites. Rate-dependent compression experiments indicate that the GO-epoxy nanocomposite with 0.1 wt% GO exhibits approximately 2.5 times higher strain rate sensitivity in this range compared to the nanocomposite containing 0.5 wt% GO. The results indicate that in neat epoxy, the modulus decreases at the second cycle but recovers in later cycles due to cyclic hardening and polymer chain alignment. In contrast, GO-reinforced nanocomposites consistently show higher unloading modulus than neat epoxy. During oligo cyclic loading, neat epoxy and GO-epoxy nanocomposites exhibit linear loading and nonlinear unloading behavior. Stress–strain responses are nearly identical between monotonic and oligo cyclic tests, except for slightly higher stress in the final cycle of cyclic loading, indicating minimal influence of short-term loading history on mechanical behavior.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 19","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668764","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

RAFT Polymerization of Oleic Acid Based on Palm Oil: Effect of Temperature, Reaction Time, and Reactant Composition on the Characteristics of Oleic Acid Oligomers Using BBD-RSM 基于棕榈油的油酸RAFT聚合：温度、反应时间和反应物组成对油酸低聚物特性的影响

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-04-07 Epub Date: 2026-03-09 DOI: 10.1002/app.70612

Sri Budi Harmami, Misri Gozan, Yenny Meliana, Dianursanti, Anita Marlina, Puji Wahyuningsih, Muhammad Rayhan Firas

{"title":"RAFT Polymerization of Oleic Acid Based on Palm Oil: Effect of Temperature, Reaction Time, and Reactant Composition on the Characteristics of Oleic Acid Oligomers Using BBD-RSM","authors":"Sri Budi Harmami, Misri Gozan, Yenny Meliana,  Dianursanti, Anita Marlina, Puji Wahyuningsih, Muhammad Rayhan Firas","doi":"10.1002/app.70612","DOIUrl":"https://doi.org/10.1002/app.70612","url":null,"abstract":"<div>\u0000 \u0000 <p>This study aimed to investigate the effect of reaction temperature, reaction time, and reactant composition using 4-Cyano-(dodecylsulfanylthiocarbonyl)sulfanylpentanoic acid as a RAFT agent (CTA) and azobisisobutyronitrile (AIBN) as an initiator, on oleic acid oligomers derived from palm oil. Experimental variations were carried out within a reaction temperature range of 60°C–80°C, a reaction time of 24–48 h, and varying the ratio of oleic acid and chain transfer agent ([M]/[CTA] from 50 to 200. The interactions between variables were observed using RSM with Box–Behnken model, encompassing 16 experimental runs. The main responses evaluated included the number-average molecular weight (<i>M</i><sub><i>n</i></sub>) and degree of polymerization (DP). The results showed that the highest molecular weight and degree of polymerization values were 847 g mol<sup>−1</sup> and 3, respectively, with the resulting monomer conversion ranging from 55.51% to 81.67%. Notably, the smallest critical micelle concentration observed was 0.0807 mg mL<sup>−1</sup>. Furthermore, the interaction between two variables (temperature–time and time-reactant ratio) also has a linear relation to molecular weight and degree of polymerization, with reaction temperature identified as the most significant influencing factor. The coefficient of determination (<i>R</i><sup>2</sup>) of this model was 0.9795 with a <i>p</i> of 0.0002. Structural characterization by FTIR, <sup>1</sup>H-NMR, and <sup>13</sup>C-NMR.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 19","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668265","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

A Novel ZrC–YB6-Modified PCS Coating Chopped Carbon Fiber/Boron Phenolic Ceramizable Composite Exhibited Outstanding High-Temperature Resistance 一种新型的zrc - yb6改性PCS涂层短切碳纤维/硼酚陶瓷复合材料具有优异的耐高温性能

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-04-07 Epub Date: 2026-03-08 DOI: 10.1002/app.70628

Yong Xie, Zheng Wei, Dizhi Liu, Zhennan Xiong, Yan Qin, Huadong Fu

{"title":"A Novel ZrC–YB6-Modified PCS Coating Chopped Carbon Fiber/Boron Phenolic Ceramizable Composite Exhibited Outstanding High-Temperature Resistance","authors":"Yong Xie, Zheng Wei, Dizhi Liu, Zhennan Xiong, Yan Qin, Huadong Fu","doi":"10.1002/app.70628","DOIUrl":"https://doi.org/10.1002/app.70628","url":null,"abstract":"<div>\u0000 \u0000 <p>Carbon fiber/phenolic resin composites are commonly employed as ablation heat-resistant materials in aerospace applications. However, their susceptibility to oxidative degradation and high ablation rates severely limit their development. Therefore, through a synergistic strategy combining fiber coating and matrix modification, a ceramizable resin-based thermal protection material containing a polycarbosilane (PCS) coating and ZrC–YB<sub>6</sub> was prepared. The research revealed that the ceramizable composite exhibited a bending strength as high as 41.82 MPa after static ablation at 1400°C in an oxygen-rich environment. Concurrently, after 30 s of ablation under a 4.2 MW/m<sup>2</sup> oxygen-acetylene heat flux, its linear ablation rate was reduced to 0.006 mm/s, respectively. Through microstructural analysis, phase analysis, and thermodynamic calculations, the ablation mechanism was elucidated. Pyc and ceramic products such as ZrO<sub>2</sub>, ZrB<sub>2</sub>, YSZ, SiC, and SiO<sub>2</sub> form a composite structure of ceramic–glass–pyrolytic carbon on the ablation surface, significantly enhancing the composite's resistance to oxidation corrosion.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 19","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668455","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

A Superhydrophobic Coating With Robust and Efficient Photothermal Anti-Ice/Deicing Properties Was Prepared by One-Step Spraying 采用一步喷涂的方法制备了一种具有坚固高效的光热防冰/除冰性能的超疏水涂层

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-04-07 Epub Date: 2026-03-08 DOI: 10.1002/app.70613

Liang Yin, Xiaosen Wang, Fapeng Zhang, Yangyang Jia, Yujie Liu, Jiwen Wang, Qiang He

{"title":"A Superhydrophobic Coating With Robust and Efficient Photothermal Anti-Ice/Deicing Properties Was Prepared by One-Step Spraying","authors":"Liang Yin, Xiaosen Wang, Fapeng Zhang, Yangyang Jia, Yujie Liu, Jiwen Wang, Qiang He","doi":"10.1002/app.70613","DOIUrl":"https://doi.org/10.1002/app.70613","url":null,"abstract":"<div>\u0000 \u0000 <p>Currently, most superhydrophobic materials suffer from problems such as complex preparation, reliance on fluorine-containing reagents, poor mechanical durability, and unclear photothermal anti-icing mechanism. To address these bottlenecks, we proposed and implemented an innovative integrated strategy. Through an environmentally friendly one-step spraying process, we combined the high adhesion of epoxy resin, the low surface energy of polydimethylsiloxane, and the photothermal and structural functions of micro-nano SiO<sub>2</sub>/NiO, successfully constructing a composite coating that possesses excellent mechanical stability, long-lasting superhydrophobicity, and efficient photothermal response. The contact angle of the coating reached 161.3°, and the sliding angle was 2°. It maintains superhydrophobicity even after 100 sandpaper abrasion cycles and 20 icing/deicing cycles, along with a highly efficient photothermal response. Anti-icing and de-icing tests show that at −5°C, −10°C, and −15°C, the coating delays icing by 20.5, 19.9, and 23.9 times compared to the substrate, respectively. Under 1.0 sun illumination, it melts a −15°C ice layer completely within 103 s and retains stable performance after rigorous environmental testing. This work not only provides a high-performance anti-icing coating but also demonstrates a universal design strategy that can synergistically enhance mechanical durability, surface superhydrophobicity, and photothermal conversion performance. It offers an indispensable solution for the surface protection of critical equipment in extreme environments.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 19","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668500","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

Fabrication of Polyimide Bead Foams via Utilizing Supercritical CO2 and Ethanol as the Co-Foaming Agents 超临界CO2和乙醇共发泡剂制备聚酰亚胺泡沫珠

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-04-07 Epub Date: 2026-02-27 DOI: 10.1002/app.70621

Long Wang, Dawei Xu, Qi Wang

{"title":"Fabrication of Polyimide Bead Foams via Utilizing Supercritical CO2 and Ethanol as the Co-Foaming Agents","authors":"Long Wang, Dawei Xu, Qi Wang","doi":"10.1002/app.70621","DOIUrl":"https://doi.org/10.1002/app.70621","url":null,"abstract":"<div>\u0000 \u0000 <p>Polyimide (PI) foam exhibits outstanding thermal stability over a wide temperature range together with excellent mechanical strength, which has been widely applied in aerospace, rail-transport and other advanced-technology fields. However, PI foam is still predominantly produced by chemical foaming of prepolymers, which is complex, costly and involves volatile organic solvents, and its physical foaming still faces the problem of harsh foaming conditions and limited expansion ratio. Here, we developed a green and effective strategy using supercritical CO<sub>2</sub> (scCO<sub>2</sub>) and ethanol (EtOH) as co-foaming agents to fabricate PI bead foams. The addition of EtOH enhanced the solubility of co-foaming agents in the PI matrix via hydrogen bonding, lowering foaming temperature and pressure while widening the process window. Under optimized conditions of 277°C and 10 MPa, PI foamed beads achieved a high expansion ratio of 11.21, an average cell size of 122.23 μm and a cell density of 5.66 × 10<sup>6</sup> cells cm<sup>−3</sup>. The molded PI bead foam parts (<i>ρ</i> = 0.22 g cm<sup>−3</sup>) exhibited a compressive strength of 4.14 MPa at 10% strain. This work demonstrated a scalable, environment-friendly scCO<sub>2</sub>/EtOH route for manufacturing high-performance PI bead foams with uniform cell structure and good bead adhesion.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 19","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668824","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

Design and Development of PVA/Starch/Sunitinib Malate Composite Hydrogels With Enhanced Mechanical Strength, Conductivity, and Self-Healing Capability for Sensor Applications 具有增强机械强度、导电性和自修复能力的PVA/淀粉/苹果酸舒尼替尼复合水凝胶的设计与开发

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-04-07 Epub Date: 2026-02-26 DOI: 10.1002/app.70614

Meghana Vinnakoti, Ramakanth Illa

{"title":"Design and Development of PVA/Starch/Sunitinib Malate Composite Hydrogels With Enhanced Mechanical Strength, Conductivity, and Self-Healing Capability for Sensor Applications","authors":"Meghana Vinnakoti, Ramakanth Illa","doi":"10.1002/app.70614","DOIUrl":"https://doi.org/10.1002/app.70614","url":null,"abstract":"<div>\u0000 \u0000 <p>Polysaccharide-based hydrogels have significant potential as flexible strain sensors owing to their intrinsic advantages, such as non-toxicity, biocompatibility, and biodegradability. Among them, starch is a low-cost and sustainable biopolymer; however, starch-based hydrogels have poor mechanical stability, which limits their practical applications. Due to this limitation, a conductive and stretchable starch-based hydrogel was developed by using polyvinyl alcohol (PVA) and sunitinib malate (SUM). Strong H-bonding interactions were formed among PVA chains, starch chains, and SUM. These interactions of the PSSUM (PVA, starch, SUM) hydrogel have excellent mechanical strength and improved self-healing behavior. Additionally, the PSSUM hydrogel exhibited an electrical conductivity of up to 9.70 × 10<sup>−4</sup> S/cm, making it suitable for sensor applications. Its conductivity, stretchability, and self-healing properties are helpful as a strain sensor. Experimental results confirmed that the hydrogel could monitor different human movements such as bending of fingers, wrist, elbow, knee, and neck.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 19","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668749","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

Investigation of the Adhesion Performance of Polymer Parts Produced by FDM-3D Printing FDM-3D打印聚合物零件粘接性能研究

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-04-07 Epub Date: 2026-03-09 DOI: 10.1002/app.70625

Fatih Yetiş, İsmail Saraç

{"title":"Investigation of the Adhesion Performance of Polymer Parts Produced by FDM-3D Printing","authors":"Fatih Yetiş, İsmail Saraç","doi":"10.1002/app.70625","DOIUrl":"https://doi.org/10.1002/app.70625","url":null,"abstract":"<div>\u0000 \u0000 <p>The additive manufacturing (AM) technique developed technologically in recent years has significant advantages compared to traditional manufacturing methods. The part sizes manufactured by AM are within certain limits owing to technological constraints. The subsequent assembly of additively manufactured parts is an important solution for overcoming dimensional constraints. Adhesive bonding offers more practical and applicable methods for joining 3D printing materials compared to other joining methods. In this work, the adhesion performance of the adherends fabricated from polylactic acid (PLA) and acrylonitride butadiene styrene (ABS) filaments by using fused deposition modeling (FDM) technology was researched with respect to various production parameters using single-lap adhesive joint (SLJs) specimens. In the manufacturing of the SLJs, three different epoxy adhesives (DP460, Loctite 9492, Loctite 9466) were employed. PLA and ABS adherends were fabricated with different infill ratios (50%, 75% and 100%) and various raster angle combinations (0°, 0/90°, 45/45°). The experimental work was designed in accordance with the Taguchi L<sub>18</sub> experimental design. The effects of the production parameters on the experimental results were commented on by Taguchi and ANOVA analyses. At the end of the study, the maximum failure load was determined as 1989 N and the minimum failure load as 916 N.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 19","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668266","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

Polylactide, Polycaprolactone, and Rice Husk—Biocomposites for Biomedical and Packaging Applications 采购产品用于生物医学和包装应用的聚乳酸，聚己内酯和稻壳-生物复合材料

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-04-07 Epub Date: 2026-03-06 DOI: 10.1002/app.70630

Amal Amin, Xabier Larranaga, Asmaa T. Mohamed, Shimaa A. Metwally, Maha Sultan, Samah A. Loutfy, E. H. A. Nashy, Manar E. Abdel Raouf

{"title":"Polylactide, Polycaprolactone, and Rice Husk—Biocomposites for Biomedical and Packaging Applications","authors":"Amal Amin, Xabier Larranaga, Asmaa T. Mohamed, Shimaa A. Metwally, Maha Sultan, Samah A. Loutfy, E. H. A. Nashy, Manar E. Abdel Raouf","doi":"10.1002/app.70630","DOIUrl":"https://doi.org/10.1002/app.70630","url":null,"abstract":"<div>\u0000 \u0000 <p>Polylactide (PLA) and polycaprolactone (PCL) biocomposites were prepared with modified rice husk (RH). In this context, RH was treated with maleic anhydride (MA) and maleated PLA (i.e., coupling agent [CA]) forming modified RH (i.e., RH-MA and RH-CA, respectively). Several formulations were tested from biocomposites of PLA and PCL with different percentages of modified RH where the best results were obtained when using 5% with respect to the used mixing method. Pure PLA and PCL- modified RH biocomposites were first obtained, then each of them was further involved in cross blends' formation with each other. Different characteristics were studied for the prepared modified RH polymeric biocomposites for future expected applications in biomedical fields and packaging. Accordingly, several PLA and PCL- modified RH biocomposites were toxic on proliferation of cancer cells with inhibitory effect against biofilm formation of bacterial cells in case of MSSA or <i>Pseudomonas aeruginosa</i>. Also, the prepared biocomposites recorded low water vapor and oxygen transmission rates (WVTR, OTR) which indicated their possible application as packaging materials for food at low moisture level or for dry food.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 19","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668043","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

High-Performance Waste Seashell Powder Reinforcing Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Tubes: Synergistic Toughening of Preferential Alignment and Annealing 高性能废贝壳粉增强聚乳酸/聚己二酸丁二酯-对苯二甲酸酯管：优先取向和退火的协同增韧

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-04-07 Epub Date: 2026-02-26 DOI: 10.1002/app.70618

Can Liu, Wen Liang, Changhua Yang, Min Nie

{"title":"High-Performance Waste Seashell Powder Reinforcing Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Tubes: Synergistic Toughening of Preferential Alignment and Annealing","authors":"Can Liu, Wen Liang, Changhua Yang, Min Nie","doi":"10.1002/app.70618","DOIUrl":"https://doi.org/10.1002/app.70618","url":null,"abstract":"<div>\u0000 \u0000 <p>Benefiting from the exceptional biodegradability and biocompatibility, poly(lactic acid) (PLA) demonstrates promising potential in polymer tubes, yet its wide application is constrained by high material costs and suboptimal mechanical properties. In this study, a low-cost, ductile, and robust waste seashell powder (WSP) reinforcing PLA/poly(butylene adipate-co-terephthalate) (PBAT) composite tube was fabricated via a synergistic strengthening and toughening strategy of flow-induced orientation and annealing. During extrusion, a dual-directional flow field was constructed via the synchronized rotation of the mandrel and die, triggering a stacked configuration of WSP along the radial direction, constructing a nacre-like structure in PLA/PBAT tubes. This nacre-like alignment demonstrated enhanced endurance to external stress, endowing the tubes with optimized radial mechanical performance. Furthermore, annealing was applied to induce the conformational regulation of PLA, contributing to the boosted toughness of the tubes. The synergistic strategy realized the synchronous enhancement of radial strength and toughness, manifesting as a considerable elevation of 94%, 143%, and 124% in cyclic compression strength, low-temperature impact energy, and elongation, respectively, compared with conventionally extruded tubes. This study proposes an effective strategy to fabricate high-performance PLA-based tubular products, thus broadening their application in fields such as medical implants, precision agriculture, and high-end packaging.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 19","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668779","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

Epoxy/Polystyrene Blend as a Model for Simulating Void Expansion and Crack Initiation After High-Pressure Hydrogen Exposure 环氧/聚苯乙烯共混物模拟高压氢暴露后孔隙膨胀和裂纹萌生的模型

IF 2.8 3区化学

Journal of Applied Polymer Science Pub Date : 2026-04-01 Epub Date: 2026-02-25 DOI: 10.1002/app.70587

Tatsuru Nishikawa, Takashi Kuriyama, Shin Nishimura

{"title":"Epoxy/Polystyrene Blend as a Model for Simulating Void Expansion and Crack Initiation After High-Pressure Hydrogen Exposure","authors":"Tatsuru Nishikawa, Takashi Kuriyama, Shin Nishimura","doi":"10.1002/app.70587","DOIUrl":"10.1002/app.70587","url":null,"abstract":"<div>\u0000 \u0000 <p>Epoxy (EP)/polystyrene (PS) blends are used to model crack initiation from voids formed after high-pressure hydrogen exposure. The blends contain spherical PS domains as well-defined sparse structures within the EP matrix, as origins of internal fracture. SEM analyses show domain sizes followed a lognormal distribution and expand after 90 MPa hydrogen exposure. In EP with 5 wt% PS(EP/PS5), matrix cracks are observed originating from the spherical PS domains. Matrix cracking after hydrogen exposure occurred in EP/PS5 with spherical PS domains about 3 μm in diameter, indicating that larger PS domains correlate with crack initiation in the epoxy matrix. The cracks exhibit a disk-like morphology. In all samples, originating from the sparse region in EP, voids with diameters of approximately 100 nm are observed. Density changes predicted from domain expansion agree with measurements, except EP/PS5 where matrix cracking caused further reduction. Elastic moduli decrease with PS content. Elastic moduli of EP with 4 wt% PS and EP/PS5 drop significantly after exposure due to domain expansion and matrix cracking, respectively. EP/PS blends with well-defined sparse/dense structure demonstrate the fracture process by internal pressure, which simulates void formation and void growth in the polymeric material by penetrated hydrogen.</p>\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 18","pages":""},"PeriodicalIF":2.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147668899","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