Properties and processing of cork powder filled cellulose derivatives composites

Maria Helena Godinho, Assis Farinha Martins, Mohamed Naceur Belgacem, Luís Gil, Nereida Cordeiro

Research output: Contribution to journalConference articlepeer-review

11 Citations (Scopus)


This paper deals with the use of cork powder, a by-product from cork industry, as a filler to reinforce hydroxypropyl cellulose (HPC) matrix. Several films were prepared using HPC, as a matrix, filled with different amounts of cork powder (average diameter < 50 μm) (0.0; 0.5; 1.0 and 10.0% w/w) and in the presence or not of 1,4-diisocyanatobutane (BDI) (7.0% w/w). Before the elaboration of these films, the surface properties of cork powder as well as that of suberin (main component of cork) were determined by Inverse Gas Chromatography (IGC). The tensile properties of the solid films obtained were studied and, as expected, for the films with BDI but without cork powder, the Young's modulus and the tensile strength increased, while the elongation decreased. However with the filled films it seemed that the Young's modulus decreased and the elongation increased. The Scanning Electron Microscopy showed that the fractured plane of samples with cross-linking agent and cork powder displayed some nucleation points (0.3 μm) which indicates a strongly bonded interface and which could be considered as a responsible for the high mechanical properties observed.

Original languageEnglish
Pages (from-to)223-228
Number of pages6
JournalMacromolecular Symposia
Publication statusPublished - 1 Jan 2001
EventEurofillers '99 Conference - Lyon, France
Duration: 6 Sept 19999 Sept 1999


Dive into the research topics of 'Properties and processing of cork powder filled cellulose derivatives composites'. Together they form a unique fingerprint.

Cite this