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On the occurrence of network interpenetration in the wood-isocyanate adhesive interphase
- Source :
- International Journal of Adhesion and Adhesives. 18:81-87
- Publication Year :
- 1998
- Publisher :
- Elsevier BV, 1998.
-
Abstract
- This paper discusses the chemistry and morphology of the wood-isocyanate adhesive bondline in reference to polymeric methylenebis(phenylisocyanate), pMDI. The typically low molecular weight of pMDI may cause swelling of the wood substrate prior to resin polymerization. These circumstances could lead to an interphase morphology that resembles an interpenetrating polymer network, IPN. In order to test this hypothesis, experiments were performed to determine if liquid pMDI swells and plasticizes yellow poplar ( Liriodendron tulipifera ) wood. It was found that liquid pMDI caused little or no plasticization of yellow poplar wood under the conditions studied. Consequently, the interphase morphology in these samples had little or no network interpenetration. The topic of network interpenetration in the wood-adhesive interphase needs additional study because of the potential utility for improving bondline durability.
- Subjects :
- Materials science
Polymers and Plastics
General Chemical Engineering
technology, industry, and agriculture
Plasticizer
Isocyanate
Biomaterials
chemistry.chemical_compound
chemistry
Polymerization
medicine
Interphase
Adhesive
Interpenetrating polymer network
Swelling
medicine.symptom
Composite material
Phenylisocyanate
Subjects
Details
- ISSN :
- 01437496
- Volume :
- 18
- Database :
- OpenAIRE
- Journal :
- International Journal of Adhesion and Adhesives
- Accession number :
- edsair.doi...........3011e44389cda84d32922604e839e8d4