Journal of Applied Polymer Science最新文献

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Cover Image, Volume 141, Issue 43 封面图片，第 141 卷第 43 期

IF 2.7 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science

Pub Date : 2024-10-07 DOI: 10.1002/app.54195

Theogene Barayavuga, Cui Jianlei, Fengqi wei, Huanhuan Mei, Mostafizur Rahman, Zhijun Wang, Xuesong Mei

The cover image is based on the Article Enhancing durable electrical conductivity in multiwalled carbon nanotubes-epoxy composites via laser repetition rate nanojoining for flexible electronics by Theogene Barayavuga et al., https://doi.org/10.1002/app.56135.

封面图片来自 Theogene Barayavuga 等人撰写的文章《通过激光重复率纳米接合增强多壁碳纳米管-环氧树脂复合材料的持久导电性，用于柔性电子器件》，https://doi.org/10.1002/app.56135。

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Inside Cover, Volume 141, Issue 42 第 141 卷第 42 期封面内页

IF 2.7 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science

Pub Date : 2024-10-01 DOI: 10.1002/app.54191

Maximilian Maidl, Heidi Englberger, Amirhossein Abbasnia, Daniel Van Opdenbosch, Cordt Zollfrank

The cover image is based on the Article Impact of oxidized sucrose as a bio-based crosslinker on thermoformable films made from lupin protein isolate (Lupinus angustifolius L.) by Maximilian Maidl et al., https://doi.org/10.1002/app.56109.

封面图片来自 Maximilian Maidl 等人撰写的文章《氧化蔗糖作为生物基交联剂对羽扇豆蛋白分离物（Lupinus angustifolius L.）热成型薄膜的影响》，https://doi.org/10.1002/app.56109。

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Front Cover, Volume 141, Issue 42 第 141 卷第 42 期封面

IF 2.7 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science

Pub Date : 2024-10-01 DOI: 10.1002/app.54189

Jin Ge, Xiang Cheng, Lihan Rong, Peng-Fei Cao, Eugene B. Caldona, Rigoberto Advincula

The cover image is based on the Article A magnetic-directed micro-particle with near-IR light triggered guest-release property by Jin Ge et al., https://doi.org/10.1002/app.56110.

封面图片来自文章《一种具有近红外光触发客体释放特性的磁导向微粒子》，作者 Jin Ge 等，https://doi.org/10.1002/app.56110。

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Correction to “The investigation of tribological properties of PAI/PI-EPN polymer coating filled with WS2 and SiC at low temperatures” 对 "填充有 WS2 和 SiC 的 PAI/PI-EPN 聚合物涂层在低温下的摩擦学特性研究 "的更正

IF 2.7 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science

Pub Date : 2024-10-01 DOI: 10.1002/app.56328

Y. Wang, J. Cao, X. Zhang, X. Wang, Q. Long, H. Xu, M. Zhu, J. Appl. Polym. Sci. 2024, 141(37), e55953. https://doi.org/10.1002/app.55953.

The fund number in the “Acknowledgements” section of the journal we published was incorrect. The incorrect number is “…the National Nature Science Foundation of China (51905317) …” This should be “…the National Nature Science Foundation of China (52005273) …”.

We apologize for this error.

Y.Wang, J. Cao, X. Zhang, X. Wang, Q. Long, H. Xu, M. Zhu, J. Appl.Sci.2024，141(37)，e55953。https://doi.org/10.1002/app.55953.The，我们发表的期刊中 "致谢 "部分的基金编号不正确。错误的编号是"......中国国家自然科学基金（51905317）......"。应为"......国家自然科学基金（52005273）......"。我们对此错误深表歉意。

引用次数: 0

Nanoencapsulation of citrus essential oils in systematic modified chitosan-based nanofibers 系统修饰壳聚糖基纳米纤维中柑橘精油的纳米封装

IF 2.7 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science

Pub Date : 2024-09-30 DOI: 10.1002/app.56176

Adelina Maria Ulici, Artiom Găină-Gardiuta, Dan Vodnar, Lucian Barbu-Tudoran, Paula Veronica Podea

In this study, chitosan (CH)/polyvinyl alcohol (PVA) hybrid nanofibers incorporating three distinct essential oils lemon, lime, and grapefruit were successfully obtained via the innovative electrospinning technique. Characteristics of the electrospinning polymeric mixture loaded with essential oils using variable ratios of CH/PVA were evaluated. The nanoencapsulation process of citrus essential oils was achieved with 47.67%–88.16% encapsulation efficiency. Notably, the thermal stability of the encapsulated essential oils experienced a significant enhancement after encapsulation. Scanning electron microscopy analysis revealed valuable insights, revealing that an increased amount of incorporated essential oil within the polymeric mixture solutions led to a reduction in the average fiber diameters. The resulting nanofibers demonstrated notable attributes such as antioxidant, tyrosinase inhibitory, and antibacterial activities. The present research demonstrates the ability of CH/PVA hybrid nanofibers obtained through an electrospinning process to preserve citrus essential oils properties quality and reveals a high potential application of nonencapsulated citrus essential oils in biomaterials, food packaging, and advanced cosmetic application.

在这项研究中，通过创新的电纺丝技术成功地获得了壳聚糖（CH）/聚乙烯醇（PVA）混合纳米纤维，其中掺入了柠檬、酸橙和葡萄柚三种不同的精油。评估了使用不同比例的 CH/PVA 进行电纺丝的聚合物混合物负载精油的特性。柑橘类精油的纳米封装工艺实现了 47.67%-88.16% 的封装效率。值得注意的是，封装后精油的热稳定性显著提高。扫描电子显微镜分析显示，聚合物混合物溶液中精油含量的增加会导致纤维平均直径的减小。由此产生的纳米纤维具有抗氧化、抑制酪氨酸酶和抗菌等显著特性。本研究表明，通过电纺丝工艺获得的 CH/PVA 混合纳米纤维能够保持柑橘精油的特性质量，并揭示了非封装柑橘精油在生物材料、食品包装和高级化妆品应用中的巨大应用潜力。

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引用次数: 0

Controlled localization of graphene oxide to improve barrier, biodegradation and mechanical properties of PBAT/EVOH 受控定位氧化石墨烯，改善 PBAT/EVOH 的阻隔性、生物降解性和机械性能

IF 2.7 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science

Pub Date : 2024-09-24 DOI: 10.1002/app.56247

Mehdi Elhamnia, Ghodratollah Hashemi Motlagh, Seyed Hassan Jafari

Incorporating graphene oxide (GO) with controlled localization into poly(butylene adipate-co-terephthalate) (PBAT) blends with poly(ethylene vinyl alcohol) (EVOH) aimed to improve barrier properties, biodegradability, and mechanical strength of PBAT. The PBAT/EVOH/GO nanocomposites containing 0 to 1 wt% of GO were prepared by a reactive mixing process in internal mixer. Microscopic images confirmed that the GO nanoplatelets are mainly localized in PBAT phase and then at the interface, contrary to the thermodynamic affinity of GO toward EVOH. The reactive nature of PBAT/EVOH/GO nanocomposites was confirmed via time-sweep rheological studies where specific changes were observed in melt viscosity over time. The results of microscopic studies, rheometry, tensile test, and dynamic mechanical thermal analysis (DMTA) confirmed that localizing GO at the interface establishes strong interactions between PBAT and EVOH. By the addition of 0.75 wt% GO, tensile and yield strength were improved by 19% and 45%, respectively. Increasing GO significantly increased the hydrolysis degradation rate of the nanocomposites. Furthermore, the addition of GO considerably decreased the oxygen and water vapor permeability of the blends by up to 40% at 1 wt% GO.

在聚己二酸丁二醇酯（PBAT）与聚乙烯醇（EVOH）的混合物中加入可控定位的氧化石墨烯（GO），旨在改善 PBAT 的阻隔性能、生物降解性和机械强度。在内部混合器中采用反应混合工艺制备了含有 0 至 1 wt% GO 的 PBAT/EVOH/GO 纳米复合材料。显微图像证实，GO 纳米颗粒主要分布在 PBAT 相中，然后分布在界面上，这与 GO 对 EVOH 的热力学亲和性相反。PBAT/EVOH/GO 纳米复合材料的反应性质通过时间扫描流变学研究得到了证实，该研究观察到熔体粘度随着时间的推移发生了特定的变化。显微镜研究、流变仪、拉伸试验和动态机械热分析（DMTA）的结果证实，将 GO 定位于界面上可在 PBAT 和 EVOH 之间建立强烈的相互作用。添加 0.75 wt% 的 GO 后，拉伸强度和屈服强度分别提高了 19% 和 45%。增加 GO 的添加量可明显提高纳米复合材料的水解降解率。此外，添加 1 wt% 的 GO 后，共混物的氧气和水蒸气渗透性大大降低了 40%。

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引用次数: 0

Advancements and potential of chitosan-genipin complex in biotechnological applications: A comprehensive review 壳聚糖-基因蛋白复合物在生物技术应用方面的进展和潜力：综述

IF 2.7 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science

Pub Date : 2024-09-23 DOI: 10.1002/app.56250

Elí Emanuel Esparza-Flores, Plinho F. Hertz, Rafael C. Rodrigues

The chitosan-genipin complex has been extensively studied and applied in various fields, attracting increasing attention due to its unique characteristics and properties. This complex enables the development of novel materials for applications in biomedical engineering, biotechnology, and medicine. Chitosan is a natural biopolymer, and genipin is an extract obtained from some fruits, mainly from genipap and gardenia; both have demonstrated biodegradability, biocompatibility, and antimicrobial properties. Due to their versatile and reinforced structure, new materials have shown potential use in drug delivery, tissue engineering, scaffolds, curatives, food packaging, and enzyme immobilization. This review will discuss the chitosan and its modifications, the genipin and its reactivity, and finally, the complex chitosan-genipin, showing some recent developments and applications and some prospectives for other applications in new fields, especially as support for enzyme immobilization.

壳聚糖-基因蛋白复合物已被广泛研究并应用于各个领域，因其独特的特征和性能而日益受到关注。这种复合物可以开发新型材料，应用于生物医学工程、生物技术和医学领域。壳聚糖是一种天然生物聚合物，吉尼平是从一些水果（主要是吉尼帕和栀子）中提取的提取物；两者都具有生物降解性、生物相容性和抗菌性。由于甲壳素具有多功能性和强化结构，这种新材料在药物输送、组织工程、支架、治疗剂、食品包装和酶固定化等方面具有潜在用途。本综述将讨论壳聚糖及其改性、基因素及其反应性，最后是壳聚糖-基因素复合物，展示一些最新的发展和应用，以及在新领域的其他应用前景，特别是作为酶固定的支持物。

引用次数: 0

A high-temperature resistant benzimidazole-based porous polymer for efficient adsorption of trinitrotoluene in aqueous solution 一种用于高效吸附水溶液中三硝基甲苯的耐高温苯并咪唑基多孔聚合物

IF 3 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science

Pub Date : 2024-09-19 DOI: 10.1002/app.56259

Chunyan Yang, Shijie Mo, Xirui Chen, Qianqian Yuan, Jiali Zhu, Ting Wang, Min Zheng, Mingru Zhou, Guanjun Chang, Yewei Xu

A novel benzimidazole-based porous polymer, denoted as PTBI, was synthesized utilizing self-synthesized 1,3,5-tris(1H-benzo[d]imidazol-2-yl)benzene (TBI) and 4,4′-difluorobenzophenone as primary materials via a CN coupling reaction, followed by a freeze-drying process. PTBI displayed commendable thermal stability, as evidenced by a temperature of 475°C at which a 5% weight loss occurred and a char yield of up to 65% at 800°C. Trinitrotoluene (TNT) was effectively adsorbed by PTBI in aqueous solutions, thanks to the combined effects of three π–π interactions and one dipole–π interaction. At 25°C, PTBI achieved a maximum adsorption capacity as high as 280.8 mg/g, with approximately 60% of this capacity attained within just 1 h. Furthermore, a thermodynamic analysis showed that the adsorption of TNT by PTBI was a spontaneous, exothermic process that was followed by a decrease in entropy. It is noteworthy that following five adsorption and desorption cycles, the adsorption efficiency held steady at a relatively high level using acetone as the eluent. These promising results underscore PTBI's significant potential in the realm of TNT wastewater treatment, positioning it as a compelling candidate for further research and application under extreme condition in this field.

以自合成的 1,3,5-三（1H-苯并[d]咪唑-2-基）苯（TBI）和 4,4′-二氟二苯甲酮为主要原料，通过 CN 偶联反应合成了一种新型苯并咪唑基多孔聚合物（简称 PTBI），随后进行了冷冻干燥处理。PTBI 的热稳定性值得称道，在 475°C 的温度下，重量损失仅为 5%，而在 800°C 的温度下，炭产量高达 65%。在三种 π-π 相互作用和一种偶极-π 相互作用的共同作用下，PTBI 在水溶液中有效地吸附了三硝基甲苯（TNT）。此外，热力学分析表明，PTBI 对 TNT 的吸附是一个自发的放热过程，随后熵值下降。值得注意的是，使用丙酮作为洗脱剂，经过五个吸附和解吸循环后，吸附效率稳定在一个相对较高的水平。这些令人鼓舞的结果凸显了 PTBI 在 TNT 废水处理领域的巨大潜力，使其成为该领域极端条件下进一步研究和应用的理想候选材料。

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引用次数: 0

The influence of viscosity buildup on the foaming dynamics of rigid polyurethane foams 粘度积累对硬质聚氨酯泡沫发泡动力学的影响

IF 3 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science

Pub Date : 2024-09-19 DOI: 10.1002/app.56302

Paula Cimavilla-Román, Pablo Álvarez-Zapatero, Suset Barroso-Solares, Anja Vananroye, Paula Moldenaers, Miguel Ángel Rodriguez-Pérez

The viscoelastic properties development during the reactive foaming of four standard polyurethane formulations was monitored using a flooded parallel plate rheometer. The measurements in situ demonstrated how foams of low catalyst content took longer than 10 min to increase their viscosity from 1 to 10³ Pa s, while foams with higher catalysts reached this modulus in less than 4 min. This polymerization speed deeply impacted the evolution of the cellular structure during foaming, which was demonstrated through in situ x-ray imaging and computer simulation. Foams with high catalyst stabilized in their final cell size in 4–5 min, concurring with the stage of largest viscosity buildup. In contrast, the foams of low catalyst content underwent strong degeneration as a result of the slow gelification and stiffening of the matrix. Simulation results also revealed that stabilization of the cellular structure happens faster when the catalyst and blowing agent contents are increased.

使用浸没式平行板流变仪监测了四种标准聚氨酯配方在反应发泡过程中粘弹性能的变化。现场测量结果表明，催化剂含量低的泡沫需要 10 分钟以上的时间才能将粘度从 1 Pa s 提高到 103 Pa s，而催化剂含量高的泡沫在不到 4 分钟的时间内就能达到这一模量。这种聚合速度对发泡过程中蜂窝结构的演变产生了深刻影响，这一点已通过现场 X 射线成像和计算机模拟得到证实。使用高催化剂的泡沫在 4-5 分钟内就稳定了最终的细胞大小，这与粘度积累最大的阶段相吻合。相反，催化剂含量低的泡沫则由于基质凝胶化和硬化缓慢而发生强烈退化。模拟结果还显示，当催化剂和发泡剂含量增加时，蜂窝结构的稳定速度更快。

引用次数: 0

Synthesis and characterization of epoxy resin-polydicyclopentadiene interpenetrating polymer networks by UV-initiated simultaneously frontal polymerization 通过紫外线引发的同时正面聚合法合成环氧树脂-聚二环戊二烯互穿聚合物网络并确定其特性

IF 3 3区化学 Q2 POLYMER SCIENCE

Journal of Applied Polymer Science

Pub Date : 2024-09-19 DOI: 10.1002/app.56268

Zhenjie Yuan, Siqi Huang, Wenduo Chen, Dazhi Jiang

By combination of UV curing and frontal polymerization, interpenetrating polymer networks (IPNs) based on diglycidyl ether of bisphenol-A (DGEBA) epoxy resin and polydicyclopentadiene (PDCPD) were prepared by UV-induced simultaneously frontal polymerization in this paper. Compared with the net DGEBA cured polymer, the tensile strength, elongation at break and impact strength of the IPNs were simultaneously improved. The maximum tensile strength and elongation at break of the IPNs reached 100 MPa and 4.64%, respectively, and the maximum impact strength reached 7.34KJ/m² with an improvement of 115.2% over that of the net DGEBA cured polymer. Thermogravimetric analysis (TGA) results revealed that the IPNs could enhance the thermal stability. Data of the differential scanning calorimetry (DSC) and TGA testing shows that the IPN shows a single glass transition temperature (T_g) which is between the T_g of DGEBA and DCPD, indicating homogeneous phase and highly cross-linked IPN formed. Morphologies and molecular structure of the IPNs polymer were observed by scanning electron microscope (SEM) and characterized by Fourier transform infrared spectroscopy (FTIR), respectively, whose results also proved the formation of ideal IPNs structures.

通过紫外固化和正面聚合相结合的方法，本文利用紫外同时正面聚合法制备了基于双酚 A 的二缩水甘油醚（DGEBA）环氧树脂和聚双环戊二烯（PDCPD）的互穿聚合物网络（IPNs）。与净 DGEBA 固化聚合物相比，IPNs 的拉伸强度、断裂伸长率和冲击强度同时得到提高。IPNs 的最大拉伸强度和断裂伸长率分别达到了 100 MPa 和 4.64%，最大冲击强度达到了 7.34KJ/m2，比净 DGEBA 固化聚合物提高了 115.2%。热重分析（TGA）结果表明，IPNs 可以提高热稳定性。差示扫描量热法（DSC）和热重分析（TGA）测试的数据显示，IPN 显示出单一的玻璃化转变温度（Tg），介于 DGEBA 和 DCPD 的 Tg 之间，表明形成了均相和高度交联的 IPN。扫描电子显微镜（SEM）和傅立叶变换红外光谱（FTIR）分别观察了 IPN 聚合物的形态和分子结构，其结果也证明形成了理想的 IPN 结构。

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