The development of value added composite products from bamboo with the application of gluing technology can play a vital role in economic development and also in forest resource conservation of any country. In this study, the gluability of Bambusa balcooa and Bambusa vulgaris, two locally grown bamboo species of Bangladesh was assessed. As the culm wall thickness of bamboos decreases from botto...

in atom transfer radical polymerization (atrp) of methyl acrylate (ma) with polyvinyl acetate macroinitiator in bulk at 90°c the plots of ln [m]0/[m] increased linearly with reaction time. the apparent propagation rate constant (kp app) of the reaction was obtained from the linear curve and used to calculate the free macroradical concentration ([r°]) in polymerization medium. the [r°] and also ...

Certain bamboo species have mechanical properties that are compatible with construction material. Despite this, their low shear strength, the presence of nodes in culms, and circular geometry inhibit expansion use this material as One technique can solve these problems is glued laminated (GLB). Based on such findings, paper aims to evaluate physical Dendrocalamus giganteus species. Two glues we...

Neste trabalho estão descritos alguns métodos para a digestão de amostras de emulsão aquosa de acetato de polivinila visando à determinação de As, B, Cd, Cr, Cu, Fe, Hg, Ni, Pb e Sb por espectrometria de emissão óptica em plasma com acoplamento indutivo (ICP OES). Foram estudados métodos clássicos como calcinação, digestão ácida (a baixa temperatura e a alta temperatura) em chapa de aquecimento...

In this study, foaming-agent free novel polyvinyl acetate (PVAc) foams reinforced with bio polymers were manufactured through freeze-drying technique. The physical, morphological and antibacterial properties of which different ratio zinc borate water-soluble chitosan investigated according to relevant standards. PVAc showed low densities (0.12 g/cm3 – 0.21 g/cm3) high porosity rates (87.50% - 7...

In this work we obtained a polymer-metal complex by mixing aqueous solution of copper(II) acetate with PVA at certain ratio, pH the and temperature. The composition compound was determined potentiometric conductometric titration. possibility formation proved calculating thermodynamic characteristics. stability constant calculated on basis modified Bjerrum’s method. metal-polymer synthesized in ...