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Browsing Research Publications by Author "Karunanayake, L"

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Chemical modification of microcrystalline cellulose using sunflower oil

Rathnayake, WSM; Karunanayake, L; Samarasekara, AMPB; Amarasinghe, DAS [Conference-Full-text]

Structural, thermal, physical and mechanical properties of microcrystalline cellulose (MCC) combined with its biodegradability make an excellent platform for the aptness of MCC in reinforcing polymeric composites ...
Development of cellulose based light weight polymer composites

Rajapaksha, LD; Saumyadi, HAD; Samarasekara, AMPB; Amarasinghe, DAS; Karunanayake, L [Conference-Abstract]

Polymer matrix composites are used in most of the engineering structures today. This type of composite consists of reinforcing materials in polymer matrix. There is an increasing demand for environmentally friendly reinforcing ...
Effect of particle size distribution of rice straw on cellulose extraction

Ratnakumar, A; Samarasekara, AMPB; Amarasinghe, DAS; Karunanayake, L [Conference-Full-text]

Cellulose has become a wonder material in the present context of research and development since it is fibrous and tough, hence biodegradable, biocompatible, and renewable natural polymer which can be employed in various ...
Extraction and characterization of Nano Crystalline Cellulose (NCC) From Sri Lankan agricultural waste

Wickramasinghe, WAWIC; Lasitha, DS; Samarasekara, AMPB; Amarasinghe, DAS; Karunanayake, L [Conference-Abstract]

In this research synthesis and characterization of cellulose and nano cellulose and process run under several conditions to obtain parameters which are belongs to optimizing. Cellulose was extracted from BG 352 rice ...
Fabrication and characterization of nanofibrillated cellulose (nfc) reinforced polymer composite

Samarasekara, AMPB; Kahavita, KDHN; Amarasinghe, DAS; Karunanayake, L [Conference-Full-text]

Increasing demands of property enhance materials lead to acquire advancement of nanomaterials. Therefore, interest in nanocellulose has been increasing exponentially in recent years. Out of two categories of nanocellulose, ...
Fabrication and characterization of Polypropylene - microcrystalline cellulose based composites with enhanced compatibility

Rathnayake, WSM; Karunanayake, L; Samarasekara, AMPB; Amarasinghe, DAS [Conference-Abstract]

There is a heighten interest on natural fiber reinforced polymer composites to achieve superior, mechanical properties. However, such composites are limited due to the poor compatibility between natural-fiber reinforcement ...
Individualization of nanofibrillated cellulose from Sri Lankan rice straw: structural characteristics and thermal properties

Ratnakumar, A; Samarasekara, AMPB; Amarasinghe, DAS; Karunanayake, L [Conference-Full-text]

Rice straw is the agricultural production residue which is considered as an agricultural waste. Though it is utilized in various ways, there is a greater possibility for value addition by disintegrating nanofibrillated ...
Investigation of thermal and mechanical properties of micro crystalline cellulose based composites

Maduranga, SMK; Silva, JASR; Samarasekara, AMPB; Amarasinghe, DAS; Karunanayake, L; Weragoda, VSC [Conference-Full-text]

This research work is based on the investigation of mechanical and thermal properties of micro crystalline cellulose (MCC) based polypropylene (PP) composites. MCC was surface modified by coconut oil to increase ...
Mcc-based transducer material to detect relative humidity

Fernandopulle, AD; Karunanayake, L; Samarasekara, AMPB; Amarasinghe, DAS; Attygalle, D [Conference-Full-text]

There is a current trend to finds alternatives to non-biodegradable synthetic polymers and toxic inorganics with more eco-friendly natural materials. This study demonstrates the potential of Micro Crystalline Cellulose (MCC) ...
Microfibrillated cellulose fabrication and characterization from sri lankan rice straw: a comparison between traditional and hybrid variety

Ratnakumar, A; Samarasekara, AMPB; Amarasinghe, DAS; Karunanayake, L [Conference-Full-text]

Rice is one of the major cereal crops cultivated globally. In the recent past, rice straw has gained momentum as a source of cellulose. However, it is notable that rice straw generated from rice cultivation has less or no ...
Microstructural rearrangements of 4,4′- methelenebis(phenyl isocyanate) (MDI) based polyurethanes in the presence of UV radiation

Amarasinghe, DAS; Senevirathna, MASR; Karunanayake, L [Conference-Abstract]

MDI based polyurethanes have vast variety of applications. Its applications will be broaden with an understanding of the microstructural changes in the polymer matrix due to UV exposure. In this study the fluorescence ...
Modeling the mechanical behavior of microcrystalline cellulose-based polymer composite materials

Amutheesan, J; Sukirtha, S; Samarasekara, AMPB; Amarasinghe, DAS; Karunanayake, L [Conference-Full-text]

Polymer-based composite materials are used in many engineering applications. There is an increasing demand for environment-friendly reinforcing materials in the industry. Previous studies done in this laboratory suggested ...
New strategy for synthesizing catalyst-free hcl-doped polyaniline

Dinujaya, N; Narangoda, C; Karunanayake, L; Panawala, PSS; Tissera, I; Samarasekara, AMPB; Amarasinghe, DAS [Conference-Full-text]

A new low-cost strategy for the catalyst-free synthesis of HCl-doped polyaniline (PANI) was developed. A 50:50 (water/hydrogen peroxide) solution was used as an oxidant and a 1M HCl solution was used as an acidic ...
Novel thermogravimetry based analytical method for cellulose yield prediction of Sri Lankan rice straw varieties

Samarasekara, AMPB; Nanayakkara, MPA; Pabasara, WGA; Amarasinghe, DAS; Karunanayake, L [Conference-Full-text]

Rice straw is the largest residue of Sri Lankan paddy cultivation which has not yet subjected to an effective value addition. But, rice straw can be converted to a high value product as it contains significant amount of ...
Path towards a sustainable bioeconomy : conversion of locally available rice straw to nanocellulose

Ratnakumar, A; Samarasekara, B; Amarasinghe, S; Rathnayake, S; Karunanayake, L [Article-Full-text]

The Sri Lankan agriculture sector has the potential to support a national bioeconomy. Rice straw is a key by-product generated from paddy cultivation. While it is traditionally treated as a waste matter, straw can be a ...
Polyaniline film-based interdigitated capacitive sensor for ammonia gas detection

Panawala, PSS; Tissera, I; Dinujaya, N; Amarasinghe, DAS; Narangoda, C; Karunanayake, L; Attygalle, D; Weragoda, VSC; Samarasekara, AMPB [Conference-Full-text]

In this work, an ammonia gas sensor based on Polyaniline(PANI) was fabricated using a custom made Interdigitated capacitive sensor(IDC-S). PANI films were successfully deposited on the IDC-S using the solution ...
Property analysis of cellulose fibers extracted from traditional rice straw varieties

Ratnakumar, A; Samarasekara, AMPB; Amarasinghe, DAS; Karunanayake, L [Conference-Full-text]

Agriculture sector plays a vital role in Sri Lankan economy. Although the country is moving towards industrialization, agricultural sector still contributes substantially to both foreign exchange earnings and GDP. ...
Reinforcement of natural rubber latex film using silica filler modified with a commercially available co-polymer solution

Ariyarathne, AATK; Somaratne, C; Walpalage, S; Liyanage, NMVK; Karunanayake, L [Conference-Abstract]

Reinforcement of natural rubber (NR) latex films is one of the most difficult tasks in latex industry. Among the others, the best reinforcing filler is silica that steers for improvement of mechanical properties such as ...
Structural analysis of cellulose fibers and rice straw ash derived from Sri Lankan rice straw

Ratnakumar, A; Samarasekara, AMPB; Amarasinghe, DAS; Karunanayake, L [Conference-Abstract]

Being an agricultural country, Sri Lanka generates over eight million metric tonnes of rice straw per annum as a byproduct of the paddy cultivation. Currently rice straw is burnt or ploughed into the field without being ...
Study of thermal and mechanical properties of microcrystalline cellulose and nanocrystalline cellulose based thermoplastic material

Samarasekara, AMPB; Kumara, SPDA; Madhusanka, AJS; Amarasinghe, DAS; Karunanayake, L [Conference-Full-text]

Polymer industries highly use thermoplastic polymer materials due to their low cost and attractive physical, mechanical and thermal properties. Polypropylene (PP) is the widely used thermoplastic material in the world ...

Now showing items 1-20 of 22

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Browsing Research Publications by Author "Karunanayake, L"

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