Journal of Applied Polymer Science最新文献

Achieving High Toughness Retention and Flame Retardancy in PC/ABS Alloys by the Synergistic AHP/DSPSi System With Reactive Compatibilization 通过反应增容的AHP/DSPSi体系实现PC/ABS合金的高韧性保持和阻燃性

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-11-07 Epub Date: 2026-10-01 DOI: 10.1002/app.71589

Ning Zhang, Shiyang Zhu, Bangdong Ge, Zongsheng Liu, Meng Ma

{"title":"Achieving High Toughness Retention and Flame Retardancy in PC/ABS Alloys by the Synergistic AHP/DSPSi System With Reactive Compatibilization","authors":"Ning Zhang, Shiyang Zhu, Bangdong Ge, Zongsheng Liu, Meng Ma","doi":"10.1002/app.71589","DOIUrl":"https://doi.org/10.1002/app.71589","url":null,"abstract":"<div>\u0000 \u0000 The flammability of polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) alloy limits its applications. To enhance flame retardancy while maintaining mechanical properties, we employed a reactive silicon-containing polyphosphamide copolymer (DSPSi) and aluminum hypophosphite (AHP) as flame retardants, along with an ethylene-maleic anhydride alternating copolymer (ZeMac) as a reactive compatibilizer. AHP and DSPSi synergistically promote the formation of a dense char layer during combustion. Through molecular design, DSPSi incorporates flexible siloxane segments, which alleviate the stress concentration caused by AHP agglomeration, thereby reducing the adverse impact on mechanical properties. ZeMac acts as an interfacial compatibilizer to improve component compatibility. With 2.5 wt% DSPSi and 5.0 wt% AHP, the limiting oxygen index (LOI) reaches 22.1% and achieves a UL-94 V-0 rating. Compared with unmodified PC/ABS, the peak heat release rate (PHRR) and peak smoke release rate (PSPR) decrease by 67.5% and 27.0%, respectively, while the elongation at break increases from 30.8% to 44.8%. Through the synergy of molecular design of the flame retardant and interfacial compatibilization, this work provides a new route to high-performance flame-retardant PC/ABS alloys.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 47","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367478","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

Comparative Performance of Poly(Vinyl Alcohol)/Chitosan Hydrogels Reinforced With Kraft Lignin and Kraft Lignin Nanoparticles 硫酸盐木质素和硫酸盐木质素纳米颗粒增强聚乙烯醇/壳聚糖水凝胶的性能比较

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-11-07 Epub Date: 2026-10-05 DOI: 10.1002/app.71599

Siriream Teapaibool, Pedram Fatehi

{"title":"Comparative Performance of Poly(Vinyl Alcohol)/Chitosan Hydrogels Reinforced With Kraft Lignin and Kraft Lignin Nanoparticles","authors":"Siriream Teapaibool, Pedram Fatehi","doi":"10.1002/app.71599","DOIUrl":"https://doi.org/10.1002/app.71599","url":null,"abstract":"The development of multifunctional hydrogels combining mechanical stability with environmental responsiveness remains challenging. This study examines poly(vinyl alcohol) (PVA)/chitosan (CS) hydrogels containing kraft lignin (KL) or kraft lignin nanoparticles (KL-NP) at loadings of 2–10 wt.%. Lignin morphology and loading significantly influenced the mechanical, swelling, UV-shielding, and antibacterial properties of the hydrogels. Among the tested formulations, KL-6 and KL-NP-8 exhibited the highest measured mechanical performance within their respective series, with KL-NP-8 reaching a tensile strength of 0.235 MPa and an elongation at break of 137%. At pH 9, KL-NP-8 achieved approximately 1700% swelling. SEM revealed a finer and more uniform matrix-level void morphology in the freeze-dried KL-NP specimens, while nitrogen-sorption analysis showed higher N2-accessible dry-state BET specific surface areas than those of the PVA-CS and KL specimens. All lignin-containing hydrogels provided essentially complete shielding across the measured UV range. Quantitative CFU analysis showed bacterial reductions of 94%–99% for E. coli and 99%–100% for S. aureus with the KL-NP formulations. Following 12 h of accelerated UVC–ozone exposure, the KL-NP specimens exhibited loading-dependent reductions in elongation. Overall, the findings identify lignin morphology and loading as coupled design variables for balancing mechanical performance, swelling, and multifunctionality.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 47","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.71599","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polyethylene Glycol-Regulated Finger-Sponge Substrate Enabling High-Performance Nanofiltration Membranes for Efficient Mg2+/Li+ Separation 聚乙烯乙二醇调节手指海绵底物使高性能纳滤膜高效分离Mg2+/Li+

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-11-07 Epub Date: 2026-10-07 DOI: 10.1002/app.71598

Yan Wu, Shiai Xu, Qiuyan Bi, Wanji Zhou, Chao Zhang

{"title":"Polyethylene Glycol-Regulated Finger-Sponge Substrate Enabling High-Performance Nanofiltration Membranes for Efficient Mg2+/Li+ Separation","authors":"Yan Wu, Shiai Xu, Qiuyan Bi, Wanji Zhou, Chao Zhang","doi":"10.1002/app.71598","DOIUrl":"https://doi.org/10.1002/app.71598","url":null,"abstract":"<div>\u0000 \u0000 Efficient lithium recovery from salt-lake brines relies on the precise discrimination and lithium ions separation from magnesium ions. In this study, polyethersulfone (PES) ultrafiltration (UF) substrate layer featuring finger-like and optimized finger-sponge transitional structures were fabricated by varying polyethylene glycol (PEG) concentrations via phase inversion. These substrate layers served as platforms for the growth of polyamide (PA) active layers through interfacial polymerization (IP). The performance of the synthesized nanofiltration (NF) membranes was assessed via the fractionation of Mg2+ and Li+ from high Mg/Li ratio brines. These results indicate the substrate layer with a finger-sponge transitional structure exhibits higher surface hydrophilicity. The PA NF membranes constructed on this substrate layer exhibit significantly enhanced divalent cations (Mg2+) rejection, while maintaining effective Mg2+/Li+ separation performance under high Mg/Li ratio and high salinity conditions. When the Mg/Li ratio of the feed solution is 20:1, the PA NF membrane achieves 99.6% ± 0.1% rejection of divalent cation Mg2+, with an Mg/Li separation factor (SF) of up to 50 ± 7. In conclusion, this study demonstrates that optimizing substrate layer transitions is an effective approach yet previously overlooked to fine-tune PA layer properties, thereby significantly advancing the Mg2+/Li+ separation performance of PA NF membranes.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 47","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367516","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

Molecular Weight Changes of Poly(Amic Acid)-Polyimide Copolymer During Thermal Imidization Detected by Gel Permeation Chromatography 凝胶渗透色谱法检测聚酰胺酸-聚酰亚胺共聚物热亚胺化过程中分子量的变化

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-11-07 Epub Date: 2026-10-04 DOI: 10.1002/app.71592

Mei Hong, Runxiang Gao, Rui Li, Xuemin Dai, Yu Kang, Yanxiong Pan, Xiangling Ji, Wei Liu

{"title":"Molecular Weight Changes of Poly(Amic Acid)-Polyimide Copolymer During Thermal Imidization Detected by Gel Permeation Chromatography","authors":"Mei Hong, Runxiang Gao, Rui Li, Xuemin Dai, Yu Kang, Yanxiong Pan, Xiangling Ji, Wei Liu","doi":"10.1002/app.71592","DOIUrl":"https://doi.org/10.1002/app.71592","url":null,"abstract":"<div>\u0000 \u0000 Poly(amic acid) (PAA) is the precursor of polyimide (PI), and the imidization from PAA to PI is a highly complex process involving the formation of a series of PAA-PI copolymers. The molecular weight changes during this process critically impact the resulting product performance. This study applied two distinct thermal imidization methods, that is, multi-step and isothermal heating, to (6FDA-DMB) PAA. The structural evolution, imidization degree (ID) and molecular weight variations were monitored by Fourier transform infrared (FT-IR) spectroscopy and gel permeation chromatography (GPC). During multi-step thermal imidization from 80°C to 350°C, ID gradually increased to 94.6%. Specifically, ID experienced the highest rate of increase between 120°C and 200°C. Regarding the isothermal imidization at 200°C, 250°C, and 350°C, the ID initially increased over time and then stabilized. Moreover, the higher the temperature, the faster the ID reached plateau, and complete imidization was achieved by curing at 350°C for 5 min. This study revealed a two-stage evolution of molecular weight under both multi-step and isothermal heating conditions. The molecular weight exhibited initial decrease followed by an increase, attributed to the decomposition and recombination of PAA chains. These findings provide deeper insights into molecular weight dynamics during PAA-PI thermal conversion.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 47","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367438","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 Carboxymethyl Chitosan and Genipin on the Structural, Water Uptake, and Thermomechanical Properties of Zein-Based Biodegradable Materials 羧甲基壳聚糖和Genipin对玉米蛋白基生物降解材料结构、吸水性能和热力学性能的影响

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-11-07 Epub Date: 2026-10-08 DOI: 10.1002/app.71591

Fahimeh Alsadat-Seyedbokaei, Carlos Bengoechea, Manuel Felix

{"title":"Effect of Carboxymethyl Chitosan and Genipin on the Structural, Water Uptake, and Thermomechanical Properties of Zein-Based Biodegradable Materials","authors":"Fahimeh Alsadat-Seyedbokaei, Carlos Bengoechea, Manuel Felix","doi":"10.1002/app.71591","DOIUrl":"https://doi.org/10.1002/app.71591","url":null,"abstract":"Zein is an insoluble prolamin protein extracted from different by-products of the corn industry. More recently, the thermoplastic behavior and ability to melt when heated displayed by zein/glycerol blends (zein/Glycerol) have highlighted its use in versatile plastic thermal processing techniques. In this study, the effect of additives that may reinforce the resulting materials is examined. A water-soluble chitosan derivative, carboxymethyl chitosan (CMCH), was included in zein/CMCH/Glycerol systems to assess the feasibility of complexation between zein and CMCH as a way to tune the hydrophilicity and mechanical properties of the material. Additionally, genipin (GNP), a natural cross-linker, was added either to zein/Glycerol or zein/CMCH/Glycerol systems to reinforce the mechanical properties. In this context, Young's modulus (E) increased from around 16 to 40 MPa when GNP was added at 0.5 mM, while maintaining its water uptake (WUC) around 170%. The joint role of CMCH and GNP was only synergistic at low GNP concentrations (0.01 mM). However, at high GNP concentrations (0.5 mM), no enhancement of the mechanical properties was observed, despite the greater thermal resistance. Thus, the properties of zein-based materials can be improved by selecting a suitable GNP concentration, which facilitates the development of bioplastics with specific applications.","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 47","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/app.71591","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of Amination g-C3N4 and Enhanced Mechanism on UV Aging Resistance of WEP Coatings 氨基化g-C3N4的制备及其增强WEP涂料抗紫外线老化机理

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-11-07 Epub Date: 2026-10-09 DOI: 10.1002/app.71587

Wei Li, Yongning Ma, Jiayi Zhao, Jiamin Feng, Jianbo Tong

{"title":"Preparation of Amination g-C3N4 and Enhanced Mechanism on UV Aging Resistance of WEP Coatings","authors":"Wei Li, Yongning Ma, Jiayi Zhao, Jiamin Feng, Jianbo Tong","doi":"10.1002/app.71587","DOIUrl":"https://doi.org/10.1002/app.71587","url":null,"abstract":"<div>\u0000 \u0000 Waterborne epoxy resin (WEP) coatings are widely used for metal protection, but the microcracks and micropores lead to corrosive media penetration. This study prepared aminated g-C3N4 (ACN) via ultrasonic dispersion-assisted ammonia treatment. The prepared samples were characterized by XRD, FTIR, SEM, tensile testing, UV aging tests, and electrochemical measurements. Results showed that amino groups were successfully introduced into g-C3N4 and ACN formed stable chemical bonds with WEP, reducing the microcracks and micropores in WEP coatings. The 2-ACN/WEP (2% ACN in composite emulsions) exhibited excellent performance on tensile strength (14.8 MPa), which enhanced 131.2% compared with that of pure WEP (6.4 MPa). After 30 min UV aging, the elongation at break only decreased about 24.8% and no obvious corrosion spots in the 720 h neutral salt spray test. The corrosion current density of 2-ACN/WEP was 5.37 × 10−11 A·cm−2 and low-frequency impedance modulus was 9.530 × 109 Ω·cm2, which was increased about 3 orders than that of WEP. This study provides a reliable approach to improve anti-corrosion and anti-UV aging properties of WEP coatings, supporting the development of high-performance green anti-corrosive coatings.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 47","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367574","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

Synthesis and Properties of Neem Oil-Based UV-Curable Coatings via Sequential Chemical Modification 顺序化学改性印楝油基紫外光固化涂料的合成及性能研究

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-11-07 Epub Date: 2026-10-01 DOI: 10.1002/app.71594

N. U. Sharif, S. Habibu, M. Sumarni, H. Wang, G. Veera Singham, H. K. Huang, C. Hu, G. S. Zeng, G. S. Tay

{"title":"Synthesis and Properties of Neem Oil-Based UV-Curable Coatings via Sequential Chemical Modification","authors":"N. U. Sharif, S. Habibu, M. Sumarni, H. Wang, G. Veera Singham, H. K. Huang, C. Hu, G. S. Zeng, G. S. Tay","doi":"10.1002/app.71594","DOIUrl":"https://doi.org/10.1002/app.71594","url":null,"abstract":"<div>\u0000 \u0000 Renewable feedstock to produce polymers as a sustainable resource has attracted considerable interest, and vegetable oils have emerged as potential bio-based feedstocks. This study reported on the utilization of Neem oil, a nonfood-grade vegetable oil, as a monomer precursor (monoglyceride) for ultraviolet-curable resin. The monoglyceride was then interacted with phosphoric acid, itaconic acid, and glycidyl methacrylate for the resin preparation. Phosphoric acid acted as a bridging agent that improved the polymer network integrity, whereas itaconic acid and glycidyl methacrylate provided unsaturated groups for polymerization. According to the results, the unsaturation double bonds were successfully polymerized by the UV curing process initiated by a photoinitiator, and the gel contents of the cured polymers were approximately 98%. The viscosity and molecular weight of the resins highly depended on the Glycerol to Neem oil ratio, as well as the content of Phosphoric acid employed. The amount of phosphoric acid also led to a decrease in the wettability of the cured films, as well as an improvement in impact resistance and adhesion strength. These results highlight the potential for Neem oil-based UV-curable coatings to act as sustainable alternatives to petroleum-derived systems and therefore pave ways toward developing environmentally friendly polymeric materials.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 47","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367479","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

Statistical Analysis of Solution and Process Parameters on Electrospun Nanofiber Diameter 静电纺纳米纤维直径溶液及工艺参数的统计分析

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-11-07 Epub Date: 2026-10-03 DOI: 10.1002/app.71590

Ravinder Sheoran, Atisha Chauhan, Rishi Pal Chauhan, Kolla Lakshmi Ganapathi

{"title":"Statistical Analysis of Solution and Process Parameters on Electrospun Nanofiber Diameter","authors":"Ravinder Sheoran, Atisha Chauhan, Rishi Pal Chauhan, Kolla Lakshmi Ganapathi","doi":"10.1002/app.71590","DOIUrl":"https://doi.org/10.1002/app.71590","url":null,"abstract":"<div>\u0000 \u0000 One of the most important challenges in electrospinning technique is the fabrication of uniform nanofibers with parameter-dependent control of diameter within the studied range for specific applications. To address this issue, we present a systematic analysis on polyvinyl alcohol (PVA) nanofibers, employing Analysis of Variance (ANOVA) to quantitatively assess the impact of four crucial parameters: solution concentration (C), flow rate (F), applied voltage (V), and needle-to-collector distance (D), using a resource-efficient fractional factorial design. Average fiber diameter ranged from 91 to 363 nm across the 27 experimental runs. Solution concentration was the dominant factor, accounting for the 47.6% of the total variance in diameter (p < 0.001), followed by voltage (16.8%, p = 0.002) and needle-to-collector distance (6.3%, p = 0.038). Flow rate had no significant effect (0.5%, p = 0.523). A significant interaction between concentration and voltage (C × V, p = 0.004) was found, indicating that the effect of voltage on fiber diameter depends strongly on solution concentration. A regression model incorporating these parameters and their interactions achieved an R2 of 83.3% (adjusted R2 = 77.1%, predicted R2 = 42.4%), providing a statistical basis for understanding, rather than precisely predicting, application-tailored diameter control in PVA nanofibers.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 47","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367504","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

Gelatin-Poly(Ethylene Glycol) Functionalized Lipid-Silica Hybrid Nanostructures With Enhanced Interfacial Properties and Colloidal Stability 具有增强界面性能和胶体稳定性的明胶-聚乙二醇功能化脂质-二氧化硅杂化纳米结构

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-11-07 Epub Date: 2026-10-03 DOI: 10.1002/app.71588

Tien-Dung Nguyen-Dinh, Ngoc Thuy Trang Le, Tan Phat Nguyen, Ching Yern Chee, Dai Hai Nguyen

{"title":"Gelatin-Poly(Ethylene Glycol) Functionalized Lipid-Silica Hybrid Nanostructures With Enhanced Interfacial Properties and Colloidal Stability","authors":"Tien-Dung Nguyen-Dinh, Ngoc Thuy Trang Le, Tan Phat Nguyen, Ching Yern Chee, Dai Hai Nguyen","doi":"10.1002/app.71588","DOIUrl":"https://doi.org/10.1002/app.71588","url":null,"abstract":"<div>\u0000 \u0000 Hybrid nanostructures combining inorganic and lipid components attract interest because their properties can be tailored through surface engineering. However, maintaining structural stability and effective interfacial interactions remains challenging. In this study, liposome-coated mesoporous silica nanostructures were functionalized with a gelatin-poly(ethylene glycol)-folate copolymer to assess the effect of biopolymer coating on lipid-silica hybrid systems. Spectroscopic, elemental, microscopic, and thermal analyses confirmed multilayer formation and surface functionalization. The optimized particles were near-spherical, with an average hydrodynamic diameter of approximately 218 nm and a negative surface charge. The gelatin-based coating improved dispersion stability in serum-containing media, indicating enhanced colloidal behavior. The optimized formulation showed an encapsulation efficiency of approximately 52.5% and a drug-loading content of approximately 9.8%. After 72 h, doxorubicin release reached approximately 44.3% at pH 5.5 versus 23% at pH 7.4, demonstrating pH-responsive behavior. In vitro studies using HeLa cells showed that the blank nanostructures maintained more than 80% cell viability at concentrations up to 200 μg/mL, while the drug-loaded system exhibited slightly higher cytotoxicity than free doxorubicin. Fluorescence imaging indicated enhanced cellular uptake after surface functionalization. Overall, the gelatin-based polymer coating enhances the interfacial properties and colloidal stability of lipid-silica hybrid nanostructures while supporting controlled drug delivery.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 47","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367505","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

An Energy Efficient Injection Molding Process Based on Dynamic Thermal Equilibrium Within the Mold Cavity 基于型腔内动态热平衡的高效节能注射成型工艺

IF 3.1 3区化学

Journal of Applied Polymer Science Pub Date : 2026-11-07 Epub Date: 2026-10-15 DOI: 10.1002/app.71595

Jun Xie, Chuanjie Liu, Haowei Ma, Peng Zhao, Shaofei Jiang, Zhutong Li, Jiquan Li

{"title":"An Energy Efficient Injection Molding Process Based on Dynamic Thermal Equilibrium Within the Mold Cavity","authors":"Jun Xie, Chuanjie Liu, Haowei Ma, Peng Zhao, Shaofei Jiang, Zhutong Li, Jiquan Li","doi":"10.1002/app.71595","DOIUrl":"https://doi.org/10.1002/app.71595","url":null,"abstract":"<div>\u0000 \u0000 In injection molding, maintaining the mold temperature needs large energy consumption. In fact, heat carried by melt can enable mold temperature to reach a dynamic thermal equilibrium. Induction heating was introduced to realize the thermal equilibrium, which provides an initial condition with low energy consumption and ensures effective filling of the mold cavity during the balancing process. Through theoretical simplification, a finite element analysis model is developed, which accurately captures the mold temperature field evolution during thermal balancing. This model is validated using injection molding experiments, power measurements, and product characterization tests. Simulation results indicate that the mold surface undergoes multiple distinct stages during continuous injection molding before reaching thermal equilibrium. The rationality of the finite element model and the feasibility of the new process were confirmed through comparison between simulated and experimental temperature data. The final equilibrium temperature can be determined by the base mold temperature, induction heating temperature, and cooling time. Energy consumption analysis demonstrated that the new process saves a maximum of 41.11% energy consumption compared to the conventional constant-temperature process at a mold temperature of 75°C. The characterization results of crystallinity and glossiness of parts have verified the feasibility of the new process. In conclusion, this study offers a promising solution for energy conservation in the injection molding industry.\u0000 </div>","PeriodicalId":183,"journal":{"name":"Journal of Applied Polymer Science","volume":"143 47","pages":""},"PeriodicalIF":3.1,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149367554","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