Qualification: 
Ph.D
mangalamr@am.amrita.edu
Phone: 
9745023821

Dr. Mangalam R. currently serves as Chairperson and Professor of the Department of Chemistry, Amrita School of Arts & Sciences, Amritapuri. She had been the coordinator of Somaiya Centre for Talent Search which was guiding High School students for National Talent Search Examination and also conducting Foundation Course for upgrading the school students to encourage analytical thinking.

EDUCATION

1976 : MSc
Kerala University
1982 : PhD
Indian Institute of Science

WORK EXPERIENCE

Year Affiliation
July 1, 2015 – Present Chairperson and Professor, Department of Chemistry, Amrita School of Arts & Sciences, Amritapuri
August 1984 – February 28, 2014 K.J. Somaiya College of Science & Commerce, Mumbai, in Senior College and retired as Associate Professor
July 1, 1983 – July 31, 1984 Lecturer, SIES College of Arts, Science & Commerce, Mumbai

Publications

Publication Type: Journal Article

Year of Publication Publication Type Title

1982

Journal Article

Dr. Mangalam Ramanathan and Kalpagam, V., “Styrene-acrylonitrile random copolymer in ethyl acetate”, Journal of Polymer Science: Polymer Physics Edition, vol. 20, pp. 773–775, 1982.[Abstract]


Dilute-solution studies on styrene-acrylonitrile random copolymer (SA2) of molar composition 51% acrylonitrile (AN) in ethyl acetate (EAc) revealed that phase separation occurred in high-molecular-weight fractions as the temperature was raised.' This behavior, known as the lower-critical-solution phenomenon, was originally reported for certain polar systems and attributed to the existence of specific interactions between the polymer and solvent. More recently, Rowlinson and co-worker showed that nonpolar systems also undergo phase separation on elevation of the temperature, but precipitation occurs well above the boiling point of the solvent, in contrast to many polar systems where the polymer usually separates at a temperature below or near the solvent boiling point. From measurements at elevated temperatures, lower-critical-solution temperatures (LCSTs) can be estimated for each fraction, which in the limit of infinite molecular weight is the O temperature.

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1982

Journal Article

Dr. Mangalam Ramanathan and Kalpagam, V., “Behaviour of methylmethacrylate-acrylonitrile random copolymers in dilute solution”, Polymer, vol. 23, pp. 991 - 998, 1982.[Abstract]


Studies on the dilute solution properties of methylmethacrylate-acrylonitrile random copolymers of three different compositions, 0.236, 0.5 and 0.74 mole fraction (m.f.) of acrylonitrile (AN) designated as MAa, MAb and MAc, respectively, have been made in good solvents and theta solvents. MAa has been studied in benzene (Bz) and ethylacetate (EAc). MAb in acetonitrile (MeCN), dimethyl sulphoxide (DMSO) and a binary solvent mixture of Bz and dimentyl formamide (DMF) in the volume ratio 6.5:1 designated as BM1 and MAc in MeCN, DMSO and Bz + DMF in the volume ratio 1.667:1 designated as BM2. The Mark-Houwink exponent ‘a’ reveals that Bz is a theta solvent for MAa at 20°C. For MAb and MAc, BM1 and BM2, respectively have ‘a’ values of 0.5 at all three temperatures studied (30°, 40° and 50°C). It is not clear whether they represent theta states or preferential adsorption plays a role complicating the behaviour in solution. The values of A2 are very low in MeCN considering that it is a very good solvent for the copolymer, ‘a’ values for MAb and MAc being 0.75 and 0.7, respectively. More »»
Faculty Research Interest: 
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