Polymer-korea最新文献_第2页

Enhanced Thermomechanical Properties of Stereo-complexed PLA Copoymer via In-situ Polymerization 原位聚合增强立体配位PLA共聚物的热机械性能

4区化学

Polymer-korea Pub Date : 2023-09-30 DOI: 10.7317/pk.2023.47.5.643

Sang-Ha Hwang, Young-Sil Lee, Kwan-Han Yoon

引用次数: 0

Study on the Effect of Tween80 on the Properties of PVA/SCFs Composites Tween80对PVA/SCFs复合材料性能影响的研究

4区化学

Polymer-korea Pub Date : 2023-09-30 DOI: 10.7317/pk.2023.47.5.598

Liulan Lin, Weixuan Xu, Guomin Liu

引用次数: 0

Study on the Crosslinking System for Molded-In Foaming (MIF) Process 模入发泡(MIF)工艺交联体系的研究

4区化学

Polymer-korea Pub Date : 2023-09-30 DOI: 10.7317/pk.2023.47.5.669

Hyo-Jun Kim, Geon-Uk Park, Jae-Keun Yu, Sung-hyun Choi, Min-Young Shon, Myung-Jun Moon

引用次数: 0

Effects of Maleic Anhydride Content on Thermomechanical and Mechanical Properties of Maleated Natural Rubber 马来酸酐含量对马来化天然橡胶热力学性能的影响

4区化学

Polymer-korea Pub Date : 2023-09-30 DOI: 10.7317/pk.2023.47.5.565

Hayeemasae Nabil, Irfan Fathurrohman Mohamad, Abdulhakim Masa Abdulhakim

引用次数: 0

Assessment of Near-infrared Penetration Depth and Photothermal Efficiency of Organic and Inorganic Materials in Tissue-mimicking Phantoms 模拟组织模型中有机和无机材料近红外穿透深度和光热效率的评估

4区化学

Polymer-korea Pub Date : 2023-09-30 DOI: 10.7317/pk.2023.47.5.678

Juyoung Hwang, Mun Ho Kim, Minseok Kwak, Mhamdi Rim, Banyu Firdaus Soeriawidjaja, Min-Chan Kim, Pradyasti Astrini, Thanh Pham Chung, Kyu Hyun, Hyun Jung Kim, Songyi Lee

{"title":"Assessment of Near-infrared Penetration Depth and Photothermal Efficiency of Organic and Inorganic Materials in Tissue-mimicking Phantoms","authors":"Juyoung Hwang, Mun Ho Kim, Minseok Kwak, Mhamdi Rim, Banyu Firdaus Soeriawidjaja, Min-Chan Kim, Pradyasti Astrini, Thanh Pham Chung, Kyu Hyun, Hyun Jung Kim, Songyi Lee","doi":"10.7317/pk.2023.47.5.678","DOIUrl":"https://doi.org/10.7317/pk.2023.47.5.678","url":null,"abstract":"본 연구는 피부조직을 모방한 아크릴아마이드 기반 팬텀을 사용하여 광열치료에서 근적외선 빛이 얼마나 깊이 투과하는지를 평가하였다. 인도시아닌그린, IR788, PA2, 금 나노 막대와 같은 다양한 광열제를 팬텀에 첨가하였다. 근적외선 레이저 조사하에서 광열제의 온도 변화를 다양한 팬텀 뚜껑의 높이에 따라 측정하였으며, 이에 따라 온도감소는 뚜껑의 두께와 비례한다는 결과를 얻었다. 또한 온도변화와 투과율이 직접적으로 관련이 있었으며, Pearson상관계수 또한 높은 값을 가졌다. 광열제의 광열 전환 효율을 계산하였고, 그 중 금 나노 막대가 팬텀에서 근적외선레이저 조사로부터 가장 에너지 흡수율이 높았다. 이 결과로부터 아크릴아마이드 기반 팬텀은 조직 조건하에서의 광열치료에서 광열제의 성능을 연구하기 위한 중요한 플랫폼을 제공할 수 있을 것이라 기대한다.","PeriodicalId":20441,"journal":{"name":"Polymer-korea","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135032251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 and Physical Properties of a Silicone Hydrogel Contact Lens with a High-water-content Cellulose Surface Layer 高含水量纤维素表面层硅酮水凝胶隐形眼镜的制备及其物理性能

4区化学

Polymer-korea Pub Date : 2023-09-30 DOI: 10.7317/pk.2023.47.5.650

Dong-Won Shin, Miran Kim, Minjin Kang, Young-Jin Kim, Hyun-Mee Lee, Ki-Hong Kim, Yoon-Soo Han

引用次数: 0

Correlation Between Structure and Physical Properties of Sulfone-Containing Aromatic Polyimides 含砜芳香族聚酰亚胺结构与物理性能的相关性研究

4区化学

Polymer-korea Pub Date : 2023-09-30 DOI: 10.7317/pk.2023.47.5.590

Young-Rae Kim, Jin-Hee Noh, Jineun Lee, Heesang Kim, Hyojin Kim, Hoon-Moh Seong, Dong-Cheul Han, Giseop Kwak

{"title":"Correlation Between Structure and Physical Properties of Sulfone-Containing Aromatic Polyimides","authors":"Young-Rae Kim, Jin-Hee Noh, Jineun Lee, Heesang Kim, Hyojin Kim, Hoon-Moh Seong, Dong-Cheul Han, Giseop Kwak","doi":"10.7317/pk.2023.47.5.590","DOIUrl":"https://doi.org/10.7317/pk.2023.47.5.590","url":null,"abstract":"방향족 다이아민과 이무수산을 단위체로 사용하여 화학적 이미드화법으로부터 설폰함유 방향족 폴리이미드를 제조하였다. 리튬이온 이차전지용 바인더로써의 잠정적인 사용을 위해 다양한 단위체 조합을 기반으로 한 분자설계를 통해 폴리머를 합성하였다. 슬러리제조를 위한 NMP에 대한 용해성, 전해액에 대한 불용성, 집전체에 대한 결착력, 다양한 공정조건과 환경에서의 안정적인 사용을 위한 폭넓은 범위에서의 유리전이온도(TSUBg/SUB)를 평가하였다. 생성 폴리머는 모두 전해액에 불용이었고 구리와 알루미늄박에 강하게 부착되었다. 폴리머 사슬의 회전자유도와 굴곡성이 증가할수록 NMP에 대한 용해도는 증대되었고 TSUBg/SUB는 감소하였다. 특히, 폴리머 사슬의 회전자유도에 영향을 미치는 “결합중심원소의 혼성상태”와 굴곡성에 영향을 미치는 “연결위치”를 임의로 수치화하여 TSUBg/SUB와의 연관성을 밝혔다. 본 연구는 설폰함유 폴리이미드의 분자구조와 물성 간의 상관관계를 명확히 함으로써 이차전지 바인더 소재의 라이브러리 구축을 위한 핵심 분자설계지침을 제공할 것으로 기대된다.","PeriodicalId":20441,"journal":{"name":"Polymer-korea","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135032068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Characterization and Investigation of Electrical Properties of Epoxidized Soybean Oil-tri Salicyl Borate Polymer 环氧大豆油-三水杨酸硼酸酯聚合物的表征及电性能研究

4区化学

Polymer-korea Pub Date : 2023-09-30 DOI: 10.7317/pk.2023.47.5.606

Çayli Gökhan, Hüseyin Esen, Demet Gürbüz, Polat Uzunoğlu Cengiz, Çinarli Adem, Kahraman Cengiz

{"title":"Characterization and Investigation of Electrical Properties of Epoxidized Soybean Oil-tri Salicyl Borate Polymer","authors":"Çayli Gökhan, Hüseyin Esen, Demet Gürbüz, Polat Uzunoğlu Cengiz, Çinarli Adem, Kahraman Cengiz","doi":"10.7317/pk.2023.47.5.606","DOIUrl":"https://doi.org/10.7317/pk.2023.47.5.606","url":null,"abstract":"In this study, polymerization and characterization of trisalicyl borate (TSB) with epoxidized soybean oil (ESO) was evaluated. Synthesis of TSB is involved by the reaction between boric acid and salicylic acid at the first step of the reaction. Then TSB was polymerized with ESO at 95 ℃ for 6 hours. All the compounds synthesized were characterized by FTIR and 1H NMR techniques. Characteristic bands of the boron esters appeared at 1644, 1610, 1578, 1472, 1276, 784, 757, 656, and 530 cm-1. 1H NMR technique indicated that hydrogens of the free carboxyl groups revealed at 10.8 ppm. The resultant polymers of TSB and ESO were rubbery materials. Mechanical, thermal and electrical properties of the TSB-ESO polymer was determined. They exhibit small stress at break values with high strain percentages. Thermal and mechanical characterization of the polymers were performed by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and Stress-Strain tests. It was found that TSB-ESO polymer exhibited highest swelling ratio in toluene. The TSB-ESO polymer was a rubbery material that showed 0.1 MPa stress at break value with 240% elongation. Thermal properties of the synthesized polymer were evaluated with DSC and TGA methods. TSB-ESA showed one Tg at -2 ℃ and a melting peak at 92 ℃. TGA plot showed 2 segmental weight loss. As an indicator for thermal stability, 5% weight loss temperature was measured as 112 ℃. Additionally, DC analysis reveals that the resistivity and conductivity of the polymeric sample is measured as 2.375 MΩm and 0.401 μS/m respectively.","PeriodicalId":20441,"journal":{"name":"Polymer-korea","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135032065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Mold Shrinkage of PPS Resin According to Injection Molding Condition for the Rectangular Specimen with Rectangular Hole 矩形孔矩形试样注塑条件下PPS树脂的模具收缩率

4区化学

Polymer-korea Pub Date : 2023-09-30 DOI: 10.7317/pk.2023.47.5.686

Chae-Jun Lim, Min-A Kang, Min-Young Lyu

引用次数: 0

Effects of Nanosilica on the Mechanical Properties and Swelling Resistance of EPDM/NBR Nanocomposites 纳米二氧化硅对三元乙丙橡胶/丁腈橡胶纳米复合材料力学性能和抗膨胀性能的影响

4区化学

Polymer-korea Pub Date : 2023-09-30 DOI: 10.7317/pk.2023.47.5.613

S. Dhanasekar, M.S. Ravi Theja, S. Baskar, S. Vishvanathperumal

{"title":"Effects of Nanosilica on the Mechanical Properties and Swelling Resistance of EPDM/NBR Nanocomposites","authors":"S. Dhanasekar, M.S. Ravi Theja, S. Baskar, S. Vishvanathperumal","doi":"10.7317/pk.2023.47.5.613","DOIUrl":"https://doi.org/10.7317/pk.2023.47.5.613","url":null,"abstract":"The final performance of polymer-based composites is greatly influenced by the surface modification of fillers, filler dispersion, and interfacial adhesion. In this contribution, silica is modified by polymethylhydrosiloxane (PMHS) using a quick and effective tris(pentafluorophenyl)borane-catalyzed functionalization that can be finished at room temperature in a few minutes. The modified silica exhibits both unaltered reactivity and a highly hydrophobic surface. A comparison of composites containing extracted silica and modified silica reveals that the PMHS modification can improve silica dispersibility by lowering the interfacial energy, as well as enhance interfacial interaction due to the reactivity of the remaining Si-H bonds. The modified composite shows remarkable improvements in mechanical properties with a PMHS grafting percentage as low as 1.5 wt% (63% increase in tensile strength, 12% increase in elongation at break, and 23% increase in modulus). We believe that the hydrosilane-modified silica offers enormous promise for the creation of high-performance polymer composites, owing to the improved overall performance of the modified composites and the ease and speed of the modification process.","PeriodicalId":20441,"journal":{"name":"Polymer-korea","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136248339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 2