RT Journal Article
T1 Preparation, characterization and mechanical properties of bio-based polyurethane adhesives from Isocyanate-functionalized cellulose acetate and castor oil for bonding wood
A1 Tenorio Alfonso, Adrián
A1 Sánchez Carrillo, María Carmen
A1 Franco Gómez, José María
AB Nowadays, different types of natural carbohydrates such as sugars, starch, cellulose andtheir derivatives are widely used as renewable raw materials. Vegetable oils are also considered aspromising raw materials to be used in the synthesis of high quality products in differentapplications, including in the adhesive field. According to this, several bio-based formulations withadhesion properties were synthesized first by inducing the functionalization of cellulose acetatewith 1,6-hexamethylene diisocyanate and then mixing the resulting biopolymer with a variableamount of castor oil, from 20% to 70% (wt). These bio-based adhesives were mechanicallycharacterized by means of small-amplitude oscillatory torsion measurements, at differenttemperatures, and standardized tests to evaluate tension loading (ASTM-D906) and peel strength(ASTM-D903). In addition, thermal properties and stability of the synthesized bio-polyurethaneformulations were also analyzed through differential scanning calorimetry and thermalgravimetric analysis. As a result, the performance of these bio-polyurethane products as woodadhesives were compared and analyzed. Bio-polyurethane formulations exhibited a simplethermo-rheological behavior below a critical temperature of around 80–100 °C depending on thecastor oil/cellulose acetate weight ratio. Formulation with medium castor oil/biopolymer weightratio (50:50 % wt) showed the most suitable mechanical properties and adhesion performance forbonding wood.
PB MDPI
SN 2073-4360
YR 2017
FD 2017
LK http://hdl.handle.net/10272/13665
UL http://hdl.handle.net/10272/13665
LA eng
NO Tenorio Alfonso, A., Sánchez Carrillo, M.C., Franco Gómez, J.M.: "Preparation, characterization and mechanical properties of bio-based polyurethane adhesives from Isocyanate-functionalized cellulose acetate and castor oil for bonding wood". Polymers. Vol. 9, n. 4, (2017). DOI: 10.3390/polym9040132
NO This work is part of two research projects (CTQ2014-56038-C3-1R and TEP-1499) sponsoredby MINECO-FEDER and Junta de Andalucía programmes, respectively.  One of the authors (Adrián Tenorio) has also received a PhD. Research Grant from ‘Ministerio de Educación’ (FPU13/01114). The authors gratefullyacknowledge the financial support.
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026