Now showing items 1-10 of 819
Films from resistant starch-pectin dispersions intended for colonic drug delivery
Free films were obtained by the solvent casting method from retrograded starch-pectin dispersions at different polymer proportions and concentrations with and without plasticizer. Film forming dispersions were characterized ...
Development of starch biobased and biodegradable plastics for their use in trays for food-packaging
This research work develops new methods to produce biodegradable starch-based trays for the purpose of replacing expanded polystyrene in the food packaging market. The starch based biopolymers present several drawbacks ...
The future of plasticsFuturo en los plásticos
(Facultad de Ciencias, 2009)
Electrical behavior of PU/POMA blends
The incorporation of conducting polymer into a conventional polymer matrix has received attention because of the possibility of combining the good processability and mechanical performance of the conventional polymer with ...
On the plastic constraint factor of polymers
The plastic constraint factor based on Hill´s theory of plasticity is widely used to check the stress state applying the essential-work-of-fracture (EWF) approach to polymers. However, the plastic constraint factor ...
Polímeros biodegradáveis - uma solução parcial para diminuir a quantidade dos resíduos plásticos
(Sociedade Brasileira de Química, 2006-07-01)
The large use of plastics has generated a waste deposit problem. Today plastic wastes represent 20% in volume of the total waste in the municipal landfills. To solve the disposal problem of plastics methods have been ...
Relative stability of polarons and bipolarons in emeraldine oligomers: a quantum chemical study
(Pergamon-elsevier Science LtdOxfordInglaterra, 2000)