Polimery最新文献_第10页

Biopolymers as renewable polymeric materials for sustainable development - an overview 生物聚合物作为可持续发展的可再生聚合物材料——综述

IF 1.6 4区工程技术

Polimery Pub Date : 2022-06-10 DOI: 10.14314/polimery.2022.5.1

Abhinav Srivastava, Atul Kumar Srivasatva, Ashutosh Singh, Priti Singh, S. Verma, M. Vats, S. Sagadevan

引用次数: 5

New boron selective sorbents for sorption – membrane hybrid system 新型硼选择性吸附剂用于吸附-膜杂化体系

IF 1.6 4区工程技术

Polimery Pub Date : 2022-05-17 DOI: 10.14314/polimery.2022.4.3

Barbara Dach, M. Bryjak, J. Bryjak, Rafał Łużny

引用次数: 0

Optical properties of polyetherketoneketone based indirect dental restorations veneered with composite 复合材料贴面聚醚酮酮间接修复体的光学性能

IF 1.6 4区工程技术

Polimery Pub Date : 2022-05-13 DOI: 10.14314/polimery.2022.4.1

Omar Alsadon, D. Wood, D. Patrick, Durgesh Bangalore, S. Pollington

引用次数: 0

Organosilicon polymer for the release of antimicrobial drugs 抗菌药物释放用有机硅聚合物

IF 1.6 4区工程技术

Polimery Pub Date : 2022-05-13 DOI: 10.14314/polimery.2022.4.2

S. Sarraj, M. Szymiczek

引用次数: 0

Evaluation of surface roughness parameters of anatomical structures models of the mandible made with additive techniques from selected polymeric materials 选用高分子材料增材制造下颌骨解剖结构模型的表面粗糙度参数评价

IF 1.6 4区工程技术

Polimery Pub Date : 2022-04-27 DOI: 10.14314/polimery.2022.4.4

P. Turek

{"title":"Evaluation of surface roughness parameters of anatomical structures models of the mandible made with additive techniques from selected polymeric materials","authors":"P. Turek","doi":"10.14314/polimery.2022.4.4","DOIUrl":"https://doi.org/10.14314/polimery.2022.4.4","url":null,"abstract":"Making a template or implant for surgery is not a simple task. This is especially true of the craniofacial area, which consists of bone tissues with a very complex geometry. Titanium alloys are still used in medicine as implantable materials. However, due to the continuous improvement of mechanical and functional properties, the scope of polymeric materials application in medicine is expanding. Each model used directly or indirectly during a surgical procedure must meet many conditions. One of them is to obtain the appropriate condition of the surface layer, which has a significant impact on the reactions between the applied surgical template or implant and the living organism. Knowledge of the printed models made of polymeric materials surface roughness parameters may allow the targeted modification planning of the surface layer, allowing better application during the procedure. In this study, the research on the comparative analysis of the obtained values of surface roughness parameters of the anatomical structures of the mandible made of selected polymer materials with the use of additive techniques was presented. In the research process, the following materials were used: polylactic acid (PLA), polycarbonate (PC), three photo polyacrylic resins (marked in the manuscript as AR1, AR2 and AR3) and polyamide (PA11). On the basis of them, physical models of the mandible lateral sections were made using 3D printing techniques. Measurements of the model surfaces geometric structure were carried out using a 3D contact profilometer. In the process of determining the surface roughness, the measurement data was filtered in accordance with the ISO 4288 standard. As a final result, selected amplitude parameters and three-dimensional visualization of the surface roughness of the tested models were presented.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46837188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of sisal fibre modification on the microbial stability of poly(hydroxybutyrate-co-valerate): thermal analysis 剑麻纤维改性对聚羟基丁酸酯-戊酸酯微生物稳定性的影响：热分析

IF 1.6 4区工程技术

Polimery Pub Date : 2022-04-19 DOI: 10.14314/polimery.2022.3.1

T. Kittikorn, E. Strömberg, M. Ek, S. Karlsson

{"title":"Influence of sisal fibre modification on the microbial stability of poly(hydroxybutyrate-co-valerate): thermal analysis","authors":"T. Kittikorn, E. Strömberg, M. Ek, S. Karlsson","doi":"10.14314/polimery.2022.3.1","DOIUrl":"https://doi.org/10.14314/polimery.2022.3.1","url":null,"abstract":"The effect of modification of sisal fibre with propionic anhydride and vinyltrimethoxy silane on the microbiological stability of poly(hydroxybutyrate-co-valerate) (PHBV) was investigated. The effect of the coupling agent – PHBV grafted with maleic anhydride (PHBV-g-MA) was also investigated. The best adhesion at the interface was observed for propionylation of sisal fibre, which improved the thermal properties of the composites. Composites with modified sisal fibre were characterized by higher activation energy (155 kJ/mol), which is related to stronger interactions at the matrix-fibre interface. In the microbial growth test, all biocomposites showed a decrease in molecular weight due to enzymatic degradation by Aspergillus niger. The most resistant to microorganisms was the composite containing propionylated sisal fibre. DMTA and TGA also confirmed the highest microbiological stability of the composite with the addition of propionylated sisal fibre, as evidenced by the smallest change in the properties after the microbiological growth test. In contrast, PHBV-g-MA caused significant enzymatic degradation due to the presence of large amorphous regions.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42578024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Pre-treatment effect on the structure of bacterial cellulose from Nata de Coco (Acetobacter xylinum) 预处理对椰树醋酸杆菌细菌纤维素结构的影响

IF 1.6 4区工程技术

Polimery Pub Date : 2022-03-28 DOI: 10.14314/polimery.2022.3.3

R. Rusdi, N. A. Halim, M. N. Norizan, Z. Abidin, N. Abdullah, Fadhlina Che Ros, Nurazlin Ahmad, A. Azmi

{"title":"Pre-treatment effect on the structure of bacterial cellulose from Nata de Coco (Acetobacter xylinum)","authors":"R. Rusdi, N. A. Halim, M. N. Norizan, Z. Abidin, N. Abdullah, Fadhlina Che Ros, Nurazlin Ahmad, A. Azmi","doi":"10.14314/polimery.2022.3.3","DOIUrl":"https://doi.org/10.14314/polimery.2022.3.3","url":null,"abstract":"This paper presents a structural analysis of various methods to produce bacterial cellulose (BC) from Nata de Coco (Acetobacter xyllinum). BC sheet, BC chem and BC mech powder were successfully prepared using oven drying, chemical and mechanical treatment. The X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and field emission scanning electron microscopy (FESEM) were used to analyze the structure of prepared BC. The structure of bacterial cellulose was compared with the structure of commercial microcrystalline cellulose (MCC) and cotton fabric. The XRD results showed that the BC sheet sample had the highest degree of crystallinity (81.76%) compared to cotton cellulose (75.73%). The crystallite size of cotton was larger than the BC sheet, with the value of 6.83 ηm and 4.55 ηm, respectively. The peaks in the FTIR spectra of all BC were comparable to the commercial MCC and cotton fabrics. FESEM images showed that the prepared BC sheet, BC mech, and BC chem had an almost similar structure like commercial MCC and cotton fabric. It was concluded that simple preparation of BC could be implemented and used for further BC preparation as reinforcement in polymer composites, especially in food packaging.","PeriodicalId":20319,"journal":{"name":"Polimery","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2022-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47208169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Influence of natural fillers on the thermal and mechanical properties of epoxy resin composites 天然填料对环氧树脂复合材料热力学性能的影响

IF 1.6 4区工程技术

Polimery Pub Date : 2022-03-28 DOI: 10.14314/polimery.2022.3.2

K. Młynarczyk, Filip Longwic, B. Podkościelna, T. Klepka

引用次数: 1

The effect of natural Gongura roselle fiber on the mechanical properties of 3D printed ABS and PLA composites 天然贡乐玫瑰纤维对3D打印ABS和PLA复合材料力学性能的影响

IF 1.6 4区工程技术

Polimery Pub Date : 2022-03-18 DOI: 10.14314/polimery.2022.3.4

A. Appusamy, Natarajan Nanjappan, P. Eswaran, M. Subramanian

引用次数: 2

Effect of glycerol on the properties of coconut oil cake reinforced poly(lactic acid) 甘油对椰油饼增强聚乳酸性能的影响

IF 1.6 4区工程技术

Polimery Pub Date : 2022-02-24 DOI: 10.14314/polimery.2022.2.2

Sachin Sumathy Raj, Thiruvasagam Chellapandian, Balakrishnan Nanjappan

引用次数: 1