ANALISIS SIFAT TERMAL DAN UJI KELARUTAN DARI KARET ALAM SIKLIS DAN KARET ALAM CAIR SIKLIS

Jurnal Kimia Mulawarman Pub Date : 2018-11-29 DOI:10.30872/JKM.V16I1.481

Leni Widiarti, Basuki Wirjosentono, Eddyanto Eddyanto

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Abstract

Abstract. The research has done analysis of thermal properties and solubility test of Cyclic Natural Rubber (CNR) and Cyclic Liquid Natural Rubber (CLNR). Cyclic Liquid Natural Rubber (CLNR) is a cyclical natural rubber which has decreased molecular weight. Synthesis of Cyclic Liquid Natural Rubber (CLNR) do by oxidative degradation after cyclic. Oxidative degradation after cyclic using Cyclic Natural Rubber (CNR) and phenylhydrazine reagent with flow rate 2 LMin-1 of oxygen atmosphere during 24 hours. Thermal analysis of Cyclic Natural Rubber (CNR) and Cyclic Liquid Natural Rubber (CLNR) by Differential Scanning Calorimetry (DSC),the glass transition temperature (Tg) of Cyclic Natural Rubber (CNR) and Cyclic Liquid Natural Rubber (CLNR) are 102,82 o C and 103,67 o C, the crystal transition temperature (Tc) of Cyclic Natural Rubber (CNR) and Cyclic Liquid Natural Rubber (CLNR) are 362,45 o C and 330,29 o C and the melting transition temperature ( Tm) of Cyclic Natural Rubber (CNR) and Cyclic Liquid Natural Rubber (CLNR) are 509,24 o C and 440,00 o C. Solubility test by dilute Cyclic Natural Rubber (CNR) and Cyclic Liquid Natural Rubber (CLNR) in some solvent with different properties and polarity index. Solubility test shows the results Cyclic Natural Rubber (CNR) and Cyclic Liquid Natural Rubber (CLNR) has polarity index around 2,4 – 4,4 and 2,4 and 4,4. Keywords: CLNR, CNR, oxidative degradation

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确定类ALAM-CARTES和交叉ALAM-carts的SIFET分析和交叉检验

摘要对循环天然橡胶（CNR）和循环液体天然橡胶（CLNR）的热性能和溶解度进行了分析。循环液体天然橡胶（CLNR）是一种分子量降低的循环天然橡胶。通过循环后的氧化降解合成循环液体天然橡胶（CLNR）。使用循环天然橡胶（CNR）和苯肼试剂在氧气气氛中以2Lmin-1的流速循环24小时后的氧化降解。用差示扫描量热法（DSC）对循环天然橡胶（CNR）和循环液体天然橡胶（CLNR）进行热分析，循环天然橡胶（CNR）和循环液体天然橡胶（CLNR）的结晶转变温度（Tc）分别为362,45°C和330,29°C，循环天然橡胶和循环液体橡胶的熔融转变温度（Tm）分别为509,24°C和440,00°C。稀释循环天然橡胶（CNR）和循环液体天然橡胶（CLNR）在不同性质和极性指数的溶剂中的溶解度测试。溶解度测试结果表明，循环天然橡胶（CNR）和循环液体天然橡胶（CLNR）的极性指数分别为2,4–4,4和2,4和4,4。关键词：CLNR，CNR，氧化降解

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Jurnal Kimia Mulawarman

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16 weeks