Chinese Journal of Polymer Science最新文献_第8页

Comparative Investigation of the Migration Behavior of Two Stearate Acid Scavengers from Ziegler-Natta Polypropylene into Water during Autoclaving Treatment 高压灭菌过程中Ziegler-Natta聚丙烯中两种硬脂酸清除剂向水中迁移行为的比较研究

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-21 DOI: 10.1007/s10118-024-3213-6

Xin-Rao Zhang, Fu-Shan Wang, Xin Wang, Yan Gao, Hong-Xing Zhang, Zhi-Qin Liu, Jia-Chun Feng

{"title":"Comparative Investigation of the Migration Behavior of Two Stearate Acid Scavengers from Ziegler-Natta Polypropylene into Water during Autoclaving Treatment","authors":"Xin-Rao Zhang, Fu-Shan Wang, Xin Wang, Yan Gao, Hong-Xing Zhang, Zhi-Qin Liu, Jia-Chun Feng","doi":"10.1007/s10118-024-3213-6","DOIUrl":"10.1007/s10118-024-3213-6","url":null,"abstract":"<div>Although Ziegler-Natta (Z-N) polyolefins have been widely used as raw materials to produce pharmaceutical or food packaging, the migration of acid scavengers, an additive usually introduced in Z-N polyolefins, from the packaging to its contents has not been reported. In this work, the migration of the two most used acid scavengers, calcium stearate (CaSt2) and zinc stearate (ZnSt2), from a Z-N polypropylene random copolymer (PPR) into water during autoclaving at 121 °C were comparatively investigated. It was found that, for PPR plates containing 0.1 wt% CaSt2 or ZnSt2 (PPR-0.1CaSt2, PPR-0.1ZnSt2, respectively), the concentration of migrated calcium ion into water increased with autoclaving time, while that of zinc ion was much lower at same treatment durations and did not show a significant increase with treatment time. Interestingly, after removing all plates and acidification treatment, a considerable amount of stearic acid was detected in sterilized water for PPR-0.1ZnSt2, but no such significant stearic acid was detected in sterilized water for PPR-0.1CaSt2. Based on the structural evolution of the two soaps upon heating, possible mechanisms for the different migration behavior of CaSt2 and ZnSt2 from PPR into water during autoclaving treatment were proposed. Our results suggest that the migration issue of acid scavengers is worthy of attention in pharmaceutical packaging materials produced from Z-N polyolefins.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"43 1","pages":"90 - 100"},"PeriodicalIF":4.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Trends in Sequence-Defined Polyelectrolyte Systems: A Perspective 序列定义聚电解质体系的发展趋势：展望

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-21 DOI: 10.1007/s10118-024-3221-6

Qiu-Hui Chang, Ruo-Chao Wang, Le-Ying Qing, Jian Jiang

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Elongational Flow-induced Crystallization of Poly(L-lactic acid) Telechelic Ionomers 聚l -乳酸远旋离聚物的拉伸流诱导结晶

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-21 DOI: 10.1007/s10118-024-3218-1

Fan Liu, Shao-Yong Huang, Jian Tang, Quan Chen

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Data-Driven Exploration of Polymer Processing Effects on the Mechanical Properties in Carbon Black-Reinforced Rubber Composites 聚合物加工对炭黑增强橡胶复合材料力学性能影响的数据驱动探索

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-21 DOI: 10.1007/s10118-024-3216-3

Zi-Long Wan, Wan-Chen Zhao, Hao-Ke Qiu, Shu-Shuai Zhou, Si-Yuan Chen, Cui-Liu Fu, Xue-Yang Feng, Li-Jia Pan, Ke Wang, Tian-Cheng He, Yu-Ge Wang, Zhao-Yan Sun

{"title":"Data-Driven Exploration of Polymer Processing Effects on the Mechanical Properties in Carbon Black-Reinforced Rubber Composites","authors":"Zi-Long Wan, Wan-Chen Zhao, Hao-Ke Qiu, Shu-Shuai Zhou, Si-Yuan Chen, Cui-Liu Fu, Xue-Yang Feng, Li-Jia Pan, Ke Wang, Tian-Cheng He, Yu-Ge Wang, Zhao-Yan Sun","doi":"10.1007/s10118-024-3216-3","DOIUrl":"10.1007/s10118-024-3216-3","url":null,"abstract":"<div>The performance and corresponding applications of polymer nanocomposites are highly dominated by the choice of base material, type of fillers, and the processing ways. Carbon black-filled rubber composites (CRC) exemplify this, playing a crucial role in various industries. However, due to the complex interplay between these factors and the resulting properties, a simple yet accurate model to predict the mechanical properties of CRC, considering different rubbers, fillers, and processing techniques, is highly desired. This study aims to predict the dispersion of fillers in CRC and forecast the resultant mechanical properties of CRC by leveraging machine learning. We selected various rubbers and carbon black fillers, conducted mixing and vulcanizing, and subsequently measured filler dispersion and tensile performance. Based on 215 experimental data points, we evaluated the performance of different machine learning models. Our findings indicate that the manually designed deep neural network (DNN) models achieved superior results, exhibiting the highest coefficient of determination (R2) values (>0.95). Shapley additive explanations (SHAP) analysis of the DNN models revealed the intricate relationship between the properties of CRC and process parameters. Moreover, based on the robust predictive capabilities of the DNN models, we can recommend or optimize CRC fabrication process. This work provides valuable insights for employing machine learning in predicting polymer composite material properties and optimizing the fabrication of high-performance CRC.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 12","pages":"2038 - 2047"},"PeriodicalIF":4.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Light-driven Self-sustained Rolling of Cylinder Hydrogels with Fast and Anisotropic Responses 具有快速和各向异性响应的圆柱形水凝胶的光驱动自持续滚动

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-21 DOI: 10.1007/s10118-024-3196-3

Qing-Li Zhu, Han-Lei Cheng, Wei-Xuan Liu, Yin-Bin Xiao, Xin-Lei Wu, Josef Breu, Wei Hong, Zhi-Jian Wang, Qiang Zheng, Zi-Liang Wu

{"title":"Light-driven Self-sustained Rolling of Cylinder Hydrogels with Fast and Anisotropic Responses","authors":"Qing-Li Zhu, Han-Lei Cheng, Wei-Xuan Liu, Yin-Bin Xiao, Xin-Lei Wu, Josef Breu, Wei Hong, Zhi-Jian Wang, Qiang Zheng, Zi-Liang Wu","doi":"10.1007/s10118-024-3196-3","DOIUrl":"10.1007/s10118-024-3196-3","url":null,"abstract":"<div>Achieving continuous motions typically requires dynamic external stimuli for cyclic deformation, or crafted geometries with intricate modules to form a self-regulated feedback loop upon static stimulation. It is still a grand challenge to realize self-sustained motion in soft robots subject to unchanging environment, without complex geometry or a control module. In this work, we report soft robots based on an anisotropic cylindrical hydrogel showing self-regulated, continuous rolling motions under constant light irradiation. The robots are animated by mirror-symmetry-breaking induced by photothermal strain gradient. The self-sustained motion is attributed to the fast and reversible deformation of the gel and the autonomous refresh of the irradiated region during the rolling motion. The hydrogel robots can reach a rolling speed of 1.27 mm·s−1 on a horizonal surface and even climb a ramp of 18° at a speed of 0.57 mm·s−1 in an aqueous environment. Furthermore, the hydrogel robots can overcome an obstacle, with rolling direction controllable through irradiation angle of the light and local irradiation on selective regions. This work suggests a facile strategy to develop hydrogel robots and may provide unforeseen inspirations for the design of self-regulated soft robots by using other intelligent materials.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"43 4","pages":"548 - 555"},"PeriodicalIF":4.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Scalable and High-Quality Monolayer Graphene Transfer onto Polymer Membranes Assisted by Camphor 可扩展和高质量的单层石墨烯转移到聚合物膜上

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-21 DOI: 10.1007/s10118-024-3207-4

Jun-Kan Yue, Jing Liang, Qiao-Yu Tan, Man Chen, Jing-Wen Li, Qing Guo, Run-Lai Li, Qiang Fu

{"title":"Scalable and High-Quality Monolayer Graphene Transfer onto Polymer Membranes Assisted by Camphor","authors":"Jun-Kan Yue, Jing Liang, Qiao-Yu Tan, Man Chen, Jing-Wen Li, Qing Guo, Run-Lai Li, Qiang Fu","doi":"10.1007/s10118-024-3207-4","DOIUrl":"10.1007/s10118-024-3207-4","url":null,"abstract":"<div>The quest for scalable integration of monolayer graphene into functional composites confronts the bottleneck of high-fidelity transfer onto substrates, crucial for unlocking graphene’s full potential in advanced applications. Addressing this, our research introduces the camphor-assisted transfer (CAT) method, a novel approach that surmounts common issues of residue and structural deformation endemic to existing techniques. Grounded in the sublimation dynamics of camphor, the CAT method achieves a clean, contiguous transfer of centimeter-scale monolayer graphene onto an array of polymer films, including ultra-thin polyethylene films. The resultant ultrathin graphene-polyethylene (gPE) films, characterized by their exceptional transparency and conductivity, reveal the CAT method’s unique ability to preserve the pristine quality of graphene, underscoring its practicality for preparing flexible transparent electrodes by monolayer graphene. In-depth mechanism investigation into the camphor sublimation during CAT has led to a pivotal realization: the porosity of the target polymer substrate is a determinant in achieving high-quality graphene transfer. Ensuring that camphor sublimates initially from the polymer side is crucial to prevent the formation of wrinkles or delamination of graphene. By extensive examination of CAT on a spectrum of commonly used polymer films, including PE, PP, PTFE, PI and PET, we have confirmed this important conclusion. This discovery offers crucial guidance for fabricating monolayer graphene-polymer composite films using methods akin to CAT, underscoring the significance of substrate selection in the transfer process.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 12","pages":"1986 - 2001"},"PeriodicalIF":4.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Tensile-WAXD Apparatus: An Improved and Accurate System for the In situ Study of Extension-induced Segmental Orientation in Highly Stretched Elastomer 张拉- waxd仪：一种用于高拉伸弹性体中拉伸诱导的节段定向原位研究的改进和精确系统

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-10 DOI: 10.1007/s10118-024-3201-x

Xiang Shi

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Chemical Synthesis of Globo H and Mannobiose Glycopolymers and their Immunological Stimulation Globo H 和甘露聚糖的化学合成及其免疫刺激作用

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-10-10 DOI: 10.1007/s10118-024-3209-2

Zhi Zhang, Ce-Ce Xue, Ying-Le Feng, Guo-Song Chen

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Doping Effect of Poly(vinylidene fluoride) on Carbon Nanofibers Deduced by Thermoelectric Analysis of Their Melt Mixed Films 通过熔融混合薄膜的热电分析推测聚偏二氟乙烯对碳纳米纤维的掺杂效应

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-09-27 DOI: 10.1007/s10118-024-3200-y

A. J. Paleo, V. M. Serrato, J. M. Mánuel, O. Toledano, E. Muñoz, M. Melle-Franco, B. Krause, P. Pötschke, K. Lozano

{"title":"Doping Effect of Poly(vinylidene fluoride) on Carbon Nanofibers Deduced by Thermoelectric Analysis of Their Melt Mixed Films","authors":"A. J. Paleo, V. M. Serrato, J. M. Mánuel, O. Toledano, E. Muñoz, M. Melle-Franco, B. Krause, P. Pötschke, K. Lozano","doi":"10.1007/s10118-024-3200-y","DOIUrl":"10.1007/s10118-024-3200-y","url":null,"abstract":"<div>The effect of temperature on the electrical conductivity (σ) and Seebeck coefficient (S) of n-type vapor grown carbon nanofibers (CNFs) and poly(vinylidene fluoride) (PVDF) melt-mixed with 15 wt% of those CNFs is analyzed. At 40 °C, the CNFs show stable n-type character (S=−4.8 µV·K−1) with an σ of ca.165 S·m−1, while the PVDF/CNF composite film shows an σ of ca. 9 S·m−1 and near-zero S (S=−0.5 µV·K−1). This experimental reduction in S is studied by the density functional tight binding (DFTB) method revealing a contact electron transfer from the CNFs to the PVDF in the interface. Moreover, in the temperature range from 40 °C to 100 °C, the σ(T) of the CNFs and PVDF/CNF film, successfully described by the 3D variable range hopping (VRH) model, is explained as consequence of a thermally activated backscattering mechanism. On the contrary, the S(T) from 40 °C to 100 °C of the PVDF/CNF film, which satisfactorily matches the model proposed for some multi-walled carbon nanotube (MWCNT) doped mats; however, it does not follow the increase in S(T) found for CNFs. All these findings are presented with the aim of discerning the role of these n-type vapor grown carbon nanofibers on the σ and S of their melt-mixed polymer composites.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 11","pages":"1802 - 1810"},"PeriodicalIF":4.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Fabrication of Modified Fibrous Filters by Electrospinning and Investigating Their Application as Improved Face Masks 用电纺法制造改性纤维过滤器并研究其在改良面罩中的应用

IF 4.1 2区化学

Chinese Journal of Polymer Science Pub Date : 2024-09-27 DOI: 10.1007/s10118-024-3205-6

Mehdi Mahmoudian, Fatemeh Zanbili

{"title":"Fabrication of Modified Fibrous Filters by Electrospinning and Investigating Their Application as Improved Face Masks","authors":"Mehdi Mahmoudian, Fatemeh Zanbili","doi":"10.1007/s10118-024-3205-6","DOIUrl":"10.1007/s10118-024-3205-6","url":null,"abstract":"<div>Owing to the significant increase in air pollutants and the spread of infectious diseases, it seems that the use of face masks will become an essential item in human societies. Therefore, there is a need to conduct more research to develop novel types of respirators utilizing up-to-date science such as nanotechnology. In this study, we fabricated a nanocomposite fibrous filter containing modified graphene oxide (GO) and zinc oxide (ZnO) nanoparticles. This layer was used as an active filter for absorbing and removing air pollutants, such as suspended submicron particles (below 2.5 microns) and CO2, NO2, and SO2 gases. The synthesized nanostructures and fibrous filters were characterized by different analysis (FTIR, XRD, TGA, and FESEM), and the performance of the filters was surveyed by tests such as pressure drop, CO2, NO2, SO2 gas rejection, and particulate removal. The results showed that the stabilization of the modified GO and ZnO nanostructures on the fibrous filter improved the effectiveness of this filter as a mask for removing toxic particles and gases, and the filter containing nanoparticles had the best performance.</div>","PeriodicalId":517,"journal":{"name":"Chinese Journal of Polymer Science","volume":"42 11","pages":"1738 - 1748"},"PeriodicalIF":4.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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