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Browsing Ruhuna International Science and Technology Conference by Author

Browsing Ruhuna International Science and Technology Conference by Author "Panamgama, L.A."

Now showing items 1-10 of 10

An assessment of water absorption of a lightweight polyester resin reinforced sawdust bio-composite

Dilrukshi, R.M.N.; Panamgama, L.A. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2022-01-19)

The main objective of this study was to introduce a waste material (an equal portion mixture of Mahogany/Ginisapu sawdust) as a reinforcement filler in making polyester composites. In this study different contents of raw ...
Biodegradability and plasticizing effect of sorbitol and citric acid on cassava starch edible films

Nilmini, W.A.S.; Panamgama, L.A. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2022-01-19)

This work explores the development of cassava starch-based biofilms using solvent casting process for food packaging applications. Cassava starch has shown low moisture content (13.09%), ash content (0.43%), water ...
Coir Pith Lignin Isolation and Spectroscopic Structure Elucidation

Panamgama, L.A.; Jayalath, J.W.W.C. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2017-01-26)

Lignin can be considered as one of the most promising renewable resource for the future. Reduction of synthetic adhesive usage in wood composite production by the development of lignocellulosic materials is a challenge. ...
Comparisons of physicochemical properties of pumpkin (Cucurbita maxima) flour and isolated starches and their biofilms

Hewage, J.S.; Hewawasam, T.R.K.; Panamgama, L.A. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2023-01-18)

Synthetic polymeric thin films which are used to extend the storage time of fruits and vegetables are nonbiodegradable. Biofilms are biodegradable and the objective of this research was to develop biofilms from pumpkin ...
Development and optimization of novel liquefaction modified cornstarch wood adhesives

Panamgama, L.A.; Prabashini, L.M.M. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2014-01-22)

The development and optimization of an environmental friendly wood adhesive system for plywood from abundant and renewable cornstarch and pine bark are presented in this study. Cornstarch was chemically modified by ...
Effect of plant phenolics on physicochemical properties of gelatin films

Panamgama, L.A.; Perera, S.A.S.P.; Jayasekara, H.D. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2020-01-22)

This study is an experimental investigation of adding liquefied pinus radiata bark extract to gelatin and the development of a new series of biobased polymeric films. A 10 %wt. gelatin filmogenic solution was prepared by ...
Evaluation of hydrolytic and thermal stability of plywood, bonded with urea-formaldehyde resins with tire pyrolysis char, wheat flour and coconut shell powder as novel filler systems

Sandamali, L.W.D.; Hewage, J.S.; Malimbadage, A.; Panamgama, L.A. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2024-01-24)

The objective of this study was to evaluate the properties of the plywood, bonded with urea formaldehyde (UF) resins with added novel filler systems. 3-ply and 5-ply plywood panels were produced with rotary-peeled rubberwood ...
Extraction and acetylation of lignin extracted from rice straw and sugar cane bagasse.

Panamgama, L.A.; Palihakkara, I.N.H. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)

Rice straw and sugar cane bagasse are waste resources available plentifully in Sri Lanka. In these materials lignin, a phenolic biopolymer is very high. Lignin is considered as one of the most promising renewable resource ...
A preliminary investigation of coating properties of different ratios of palm: soy oil-based alkyd: epoxy resins

Panamgama, L.A.; Hewage, J.S.; Rathnayaka, M.I.V.R. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2020-01-22)

The purpose of this research was to develop polyalkyds from readily available, low-cost sustainable raw materials by alcoholysis-polyesterification method at lab scale. Palm alkyds has non-self-drying characteristics, ...
Structural analysis of green adhesives synthesized by coir fiber lignin substitution in phenolic resol resins.

Panamgama, L.A.; Madhuwanthi, W.M.Y. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2016-01-28)

This research investigated the possibility of substituting coir fiber lignin in synthesis of bio-based phenolic resol resins. Coir fiber was subjected to alkaline soda process from which the lignin was recovered. The ...

Browsing Ruhuna International Science and Technology Conference by Author "Panamgama, L.A."

Browsing Ruhuna International Science and Technology Conference by Author "Panamgama, L.A."

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