Majalah Kulit, Karet, dan Plastik最新文献_第2页

Purge material berbasis campuran recycled HDPE dan lempung kaolin untuk ekstrusi polipropilena dan masterbatch 净化回收的HDPE基材料和高岭土污泥，用于聚丙烯和母料提取

Majalah Kulit, Karet, dan Plastik Pub Date : 2021-07-01 DOI: 10.20543/mkkp.v37i1.6657

F. Aryanti, Elga Chaerul Pasya

引用次数: 0

Characterization of ethylene–vinyl acetate (EVA)/modified starch expanded compounds for outsole material 用于外底材料的乙烯-乙酸乙烯酯（EVA）/改性淀粉膨胀化合物的表征

Majalah Kulit, Karet, dan Plastik Pub Date : 2021-07-01 DOI: 10.20543/MKKP.V37I1.6916

D. W. Nurhajati, U. Lestari, Gunawan Priambodo

{"title":"Characterization of ethylene–vinyl acetate (EVA)/modified starch expanded compounds for outsole material","authors":"D. W. Nurhajati, U. Lestari, Gunawan Priambodo","doi":"10.20543/MKKP.V37I1.6916","DOIUrl":"https://doi.org/10.20543/MKKP.V37I1.6916","url":null,"abstract":"The use of non-biodegradable material in shoe components has negative impacts on environmental sustainability when disposed into landfills due to poor biodegradability. This study prepared ethylene–vinyl acetate (EVA)/modified starch expanded compounds as outsole material to overcome environmental pollution. This research aimed to investigate the effects of EVA/modified starch ratio on the properties of the compound. Ethylene-vinyl acetate (EVA) copolymer was blended with a modified cassava starch in various amounts (10-50 phr) using a two-roll mill. Effect of modified starch content was characterized its tensile strength, elongation at break, tearing strength, 50% permanent set, density, abrasion resistance, flex resistance, biodegradability, and morphology. The optimum value of tensile strength (61.33 kg/cm²), elongation at break (895%), and tear strength (16.62 N/mm) were obtained for samples containing 20 phr modified starch. The EVA compound containing 30 phr of starch showed the optimum 50% permanent set (4.85%) and the highest abrasion resistance with the smallest volume loss of 439.99 mm³. The addition of modified starch up to 50 phr provided good flexural resistance to 150000 number of cycles. The morphology image showed that distribution of modified starch particles was not homogeneously dispersed in the EVA/modified starch expanded compound. Incorporation of modified starch in EVA compound was improving its biodegradability.","PeriodicalId":18167,"journal":{"name":"Majalah Kulit, Karet, dan Plastik","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43253304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analisis post mortem kulit kambing mentah yang diolah di UPTD penyamakan kulit Padang Panjang 生羊UPTD长期皮肤愈合的尸检分析

Majalah Kulit, Karet, dan Plastik Pub Date : 2021-07-01 DOI: 10.20543/mkkp.v37i1.6699

Sri Mutiar, Anwar Kasim, E. Emriadi, Alfi Asben

引用次数: 2

The eﬀect of additive dosages on crepe quality produced 添加剂用量对可绉品质的影响

Majalah Kulit, Karet, dan Plastik Pub Date : 2021-01-01 DOI: 10.20543/mkkp.v37i1.6307

S. Hanifarianty, Afrizal Vachlepi, M. Purbaya

{"title":"The eﬀect of additive dosages on crepe quality produced","authors":"S. Hanifarianty, Afrizal Vachlepi, M. Purbaya","doi":"10.20543/mkkp.v37i1.6307","DOIUrl":"https://doi.org/10.20543/mkkp.v37i1.6307","url":null,"abstract":"Thin Pale Crepe (TPC) products are currently increasing in demand by rubber product manufacturers. Its production process is relatively more efficient than crumb rubber, which is Indonesia’s main product. The drying of TPC products still uses air drying from the burning of rubberwood. The use of rubberwood is predicted to be less economical in the future. With an increasing limited natural forest, rubberwood will be an alternative substitute for wood from natural forests. As a result, the economic value of rubberwood will be even greater which will have an impact on the increasing cost of TPC products if it continues to use rubberwood as fuel. Therefore, we need an alternative to rubberwood as an energy source for drying TPC. Sunlight can be an alternative source of energy that can be maximized for the drying process of natural rubber, including in TPC production. This research was conducted in two stages, namely 1) the production of TPC using latex from various clones with several additive dosages, and 2) TPC drying using various renewable energy sources. The results of research activities are in the form of a technology package regarding the TPC production process using renewable energy sources. The results showed that the TPC products produced with various treatments fulfilled SNI 1903-2000. The three clones (BPM 24, PB 260, and GT 1) were able to produce TPC with bright yellow color.","PeriodicalId":18167,"journal":{"name":"Majalah Kulit, Karet, dan Plastik","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67688423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Pengaruh ukuran partikel arang dari limbah tutup botol plastik terhadap kualitas briket 塑料瓶盖对木炭颗粒质量的影响

Majalah Kulit, Karet, dan Plastik Pub Date : 2020-12-29 DOI: 10.20543/mkkp.v36i2.6140

Erlinda Ningsih, Kartika Udyani, Agus Budianto, N. Hamidah, Siti Afifa

引用次数: 5

Properties of microfibrillar cellulose filled thermoplastic natural rubber: Morphology, mechanical properties, and melt flow index 微纤维纤维素填充热塑性天然橡胶的性能:形态、机械性能和熔体流动指数

Majalah Kulit, Karet, dan Plastik Pub Date : 2020-12-23 DOI: 10.20543/mkkp.v36i2.6522

I. N. Indrajati, I. R. Dewi, D. W. Nurhajati

{"title":"Properties of microfibrillar cellulose filled thermoplastic natural rubber: Morphology, mechanical properties, and melt flow index","authors":"I. N. Indrajati, I. R. Dewi, D. W. Nurhajati","doi":"10.20543/mkkp.v36i2.6522","DOIUrl":"https://doi.org/10.20543/mkkp.v36i2.6522","url":null,"abstract":"Microfibrillar cellulose (MFC) was derived from local pineapple leaf fiber (PALF) and employed as filler in thermoplastic natural rubber (TPNR), that was a blend of natural rubber (NR) and polypropylene (PP). The blends were prepared by dynamic vulcanization. The performance of MFC-filled TPNR on morphology, mechanical properties, aging behavior, and melt flow index (MFI) were evaluated in this study. MFC was synthesized through several processing steps, including extraction, bleaching, acid hydrolysis, and ball-milling mechanical treatment. The blends were made in a fixed ratio of 60/40 (NR/PP) with various fiber concentration. NR/PP was blended in Rheomix internal mixer at 160 °C for 15 minutes with turning rotor of 90 rpm. The results showed that the particle size distribution of MFC was rather broad with some web-like agglomerates. An improvement in tensile strength was observed at low fiber loading. Fiber improved tear strength, but decreased elongation at break as expected. The obtained hardness was independent to fiber loading. The fractured sample of TPNR showed fibrous morphology indicating plastic deformation. MFC decreased the melt flow index of TPNR. The MFI value ranges between 3 – 5 g/10 min. Introduction 1 phr of MFC resulted in ultimate mechanical properties with considerable melt flow.","PeriodicalId":18167,"journal":{"name":"Majalah Kulit, Karet, dan Plastik","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41506532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Utilization of Nyctanthes arbor-tristis L and Artocarpus heterophyllus Lam extracts as natural dyes for sheepskins leather with different mordants 用不同媒染剂对羊皮革进行天然染料的研究

Majalah Kulit, Karet, dan Plastik Pub Date : 2020-12-23 DOI: 10.20543/MKKP.V36I2.6410

Dona Rahmawati, U. Lestari, E. Kasmudjiastuti

{"title":"Utilization of Nyctanthes arbor-tristis L and Artocarpus heterophyllus Lam extracts as natural dyes for sheepskins leather with different mordants","authors":"Dona Rahmawati, U. Lestari, E. Kasmudjiastuti","doi":"10.20543/MKKP.V36I2.6410","DOIUrl":"https://doi.org/10.20543/MKKP.V36I2.6410","url":null,"abstract":"Natural dye, as dyeing material, delivers beautiful and distinctive color, synthetic chemical free, easy to get, easy to degrade, and produces non-toxic liquid waste. Natural dyes require mordant to attach the dye molecules into the leather fibers. This study aimed to determine the effect of mordant in the leather dyeing process using natural dyes extracted from Artocarpus heterophyllus Lam wood and Nyctanthes arbor-tristis L. flowers. The treatment was using three kinds of mordant, i.e. alum, citric acid, and zinc sulfate, with pre-mordanting method, 3% by weight of the sheepskins crust leather tanned with chrome and syntan. The result of the dry rub fastness was excellent (score 5). The wet rub fastness of dyed leather with citric acid mordant was good (score 4 - 4/5), while for alum mordant was quite good (score 3/4). Artocarpus heterophyllus Lam wood extract produced better wet rub fastness compared to Nyctanthes arbor-tristis L. flowers extract. Citric acid mordant produced colors with the highest brightness level for both natural dyes extracts compared to alum and zinc sulfate. Artocarpus heterophyllus Lam wood extract produced a brighter color compared to Nyctanthes arbor-tristis L. flowers extract with the same mordant. The visual result of the dyeing process was brownish-yellow.","PeriodicalId":18167,"journal":{"name":"Majalah Kulit, Karet, dan Plastik","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43272618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Penerapan sistem penyamakan kombinasi krom pada kulit ikan kakap merah (Lutjanus sp.) untuk bahan kulit atasan sepatu wanita 将联合铬合金技术应用于红鲷鱼(Lutjanus sp)，用于女性鞋头

Majalah Kulit, Karet, dan Plastik Pub Date : 2020-12-22 DOI: 10.20543/mkkp.v36i2.6215

R. S. Murti, H. Susanto, A. Pratiwi

引用次数: 0

Karakteristik Marshall dari aspal termodifikasi crepe rubber 皱纹橡胶改性沥青的马歇尔特性

Majalah Kulit, Karet, dan Plastik Pub Date : 2020-12-22 DOI: 10.20543/mkkp.v36i2.6108

Bahruddin Bahruddin, Arya Wiranata, Alfian Malik, Robby Kumar

引用次数: 1

Biodegradable plastics from linier low-density polyethylene and polysaccharide: The influence of polysaccharide and acetic acid 内衬低密度聚乙烯和多糖生物降解塑料：多糖和乙酸的影响

Majalah Kulit, Karet, dan Plastik Pub Date : 2019-07-29 DOI: 10.20543/MKKP.V35I1.4874

D. W. Nurhajati, B. Pidhatika, S. Harjanto

{"title":"Biodegradable plastics from linier low-density polyethylene and polysaccharide: The influence of polysaccharide and acetic acid","authors":"D. W. Nurhajati, B. Pidhatika, S. Harjanto","doi":"10.20543/MKKP.V35I1.4874","DOIUrl":"https://doi.org/10.20543/MKKP.V35I1.4874","url":null,"abstract":"Global problems associated with conventional, non-biodegradable plastics have urged the society to use more eco-friendly biodegradable plastics. In this study, linear low-density polyethylene (LLDPE) was co-compounded with cassava-based thermoplastic starch (TPS) to prepare biodegradable plastics (i.e. plastics that can be degraded by microbes), in which three different LLDPE/TPS ratios were studied. Acetic acid was used to hydrolyze the polysaccharides by breaking the branched amylopectin that causes the TPS-containing composites brittle and stiff. The biodegradation properties of the LLDPE/TPS composites were determined by observing the level of microbial growth on the sample surface after incubation with potato dextrose agar medium that was inoculated with Penicillium sp. and Aspergillus niger . Burial test in a humid composting medium was also performed to validate the biodegradation properties. The mass change (%) was calculated in relative to the initial mass before burial test. The physical properties (tensile strength and elongation at break) of the bioplastics were determined using universal testing machine before and after burial treatment. The morphology of the sample surface was evaluated using scanning electron microscopy. The results showed that the microbial growth increases with increasing TPS content. Negative mass changes were observed on all samples that contain TPS, with increase in the magnitude with increasing TPS content. The tensile strength tends to increase in the first 28 days of burial period in a composting medium then decreases and plateaus, while the elongation at break decreases with increasing burial period. Moreover, samples that contain acetic acid showed less microbial attachment and less biodegradation compared to samples that does not contain acetic acid.","PeriodicalId":18167,"journal":{"name":"Majalah Kulit, Karet, dan Plastik","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45155159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3