Open AccessThe effect of synthesis reaction medium polarity on the degree of substitution (DS) value of carboxymethyl Kappa carrageenan (CMKC) synthesis: case study of isopropanolethanol-ethyl acetate mixture uses as synthesis reaction medium
Author(s) -
Nuridhia Nisa Purnama,
Irma Kartika Kusumaningrum,
Anugrah Ricky Wijaya,
Brilian Zuhroti
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/456/1/012078
Subject(s) - chemistry , polarity (international relations) , ethanol , ethyl acetate , organic chemistry , biochemistry , cell
This research aimed to analyze the effect of synthesis reaction medium polarity on the DS value of CMKC, we were studied the use of isopropanol-ethanolethyl acetate mixture at some proportion variation, as synthesis reaction medium, relation between polarity of reaction medium and DS value of CMKC, then determine optimum proportion of isopropanol-ethanol- ethyl acetate, as reaction medium, that was produced CMKC that has highest DS value. This research was done in two step (1) synthesize of cmkc by monochloroacetic acid (MCA) as etherification agent and mixture of isopropanolethanol-ethyl acetate as reaction medium (2) characterization of CMKC properties to determine the effect of synthesis reaction medium polarity against DS value. The results showed that reaction medium polarity affect on the value of DS. CMKC synthesis that was done in isopropanol-ethanol-etyl acetate 25:2:3 v/v has the highest DS value, 1.60.