Chemical modification of lignins: Towards biobased polymers

Rising environmental concerns and depletion of petro-chemical resources has resulted in an increased interest in biorenewable polymer-based environmentally friendly materials. Among biorenewable polymers, lignin is the second most abundant and fascinating natural polymer next to cellulose. Lignin is one of the three major components found in the cell walls of natural lignocellulosic materials. Lignin is widely available as a major byproduct of a number of industries involved in retrieving the polysaccharide components of plants for industrial applications, such as in paper making, ethanol production from biomass, etc. The impressive properties of lignin, such as its high abundance, low weight, environmentally friendliness and its antioxidant, antimicrobial, and biodegradable nature, along with its CO2 neutrality and reinforcing capability, make it an ideal candidate for the development of novel polymer composite materials. Considerable efforts are now being made to effectively utilize waste lignin as one ...

Progress in Green Polymer Composites from Lignin for Multifunctional Applications: A Review

A review of the multi-component utilisation of coal fly ash

Towards lignin-based functional materials in a sustainable world

Chitosan as a bioactive polymer: Processing, properties and applications.

Mechanical and thermal characteristics of high density polyethylene-fly ash Cenospheres composites

Mechanical and thermal properties of compatibilized composites of polyethylene and esterified lignin

High density polyethylene/cenosphere composites reinforced with multi-walled carbon nanotubes: Mechanical, thermal and fire retardancy studies

LDPE and chitosan blends were prepared using an epoxy-functionalized polyethylene as compatibilizing agent for improving interfacial adhesion. Compatibilization improved both tensile and flexural properties (with values approaching close to that of neat LDPE) when compared with that of uncompatibilized blends. However, the elongation at break reduced due to the addition of rigid chitosan. Thermogravimetric analysis showed a two-stage degradation, while differential scanning calorimetry exhibited reduced crystallinity for compatibilized blends. Biodegradation studies revealed increased biodegradability with increase in chitosan loading. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Blends of LDPE/chitosan using epoxy‐functionalized LDPE as compatibilizer

Biodegradable nanocomposites of cellulose acetate phthalate and chitosan reinforced with functionalized nanoclay (NC) were prepared. The NC loading was varied from 0 to 10%. The mechanical and thermal properties have been investigated for these composites. The nanocomposites exhibited enhanced mechanical properties due to the addition of NC. The scanning electron micrographs of the blend specimens also support the above observations. Thermogravimetric analyses were carried out to assess the degradation stability of the blends. The blend shows an increase in the rate of biodegradation and water uptake with higher loading of NC. The exfoliation of NC was analyzed by X-ray diffraction studies. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012

Biodegradable nanocomposites of cellulose acetate phthalate and chitosan reinforced with functionalized nanoclay: Mechanical, thermal, and biodegradability studies

R. R. N. Sailaja

Papers

Mechanical and thermal characteristics of high density polyethylene-fly ash Cenospheres composites

Mechanical and thermal properties of compatibilized composites of polyethylene and esterified lignin

High density polyethylene/cenosphere composites reinforced with multi-walled carbon nanotubes: Mechanical, thermal and fire retardancy studies

Blends of LDPE/chitosan using epoxy‐functionalized LDPE as compatibilizer

Biodegradable nanocomposites of cellulose acetate phthalate and chitosan reinforced with functionalized nanoclay: Mechanical, thermal, and biodegradability studies