Brief Overview on Bio-Based Adhesives and Sealants

Polymers

JorgeF.J. Coelho¹  AnaC. Fonseca¹  Solange Magalhães²  Luís Alves²  Magnus Norgren³  Anabela Romano⁴  Bruno Medronho⁴ 

[1] CEMMPRE, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima-Pólo II, 3030-290 Coimbra, Portugal;CIEPQPF, Department of Chemical Engineering, University of Coimbra, Pólo II—R. Silvio Lima, 3030-790 Coimbra, Portugal;FSCN, Surface and Colloid Engineering, Mid Sweden University, SE-851 70 Sundsvall, Sweden;Faculty of Sciences and Technology (MeditBio), Ed. 8, University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal;

关键词: cellulose;    lignin;    adhesives;    sealants;    silicone;    adhesion;   

DOI  :  10.3390/polym11101685

来源: DOAJ

【 摘 要 】

Adhesives and sealants (AS) are materials with excellent properties, versatility, and simple curing mechanisms, being widely used in different areas ranging from the construction to the medical sectors. Due to the fast-growing demand for petroleum-based products and the consequent negative environmental impact, there is an increasing need to develop novel and more sustainable sources to obtain raw materials (monomers). This reality is particularly relevant for AS industries, which are generally dependent on non-sustainable fossil raw materials. In this respect, biopolymers, such as cellulose, starch, lignin, or proteins, emerge as important alternatives. Nevertheless, substantial improvements and developments are still required in order to simplify the synthetic routes, as well as to improve the biopolymer stability and performance of these new bio-based AS formulations. This environmentally friendly strategy will hopefully lead to the future partial or even total replacement of non-renewable petroleum-based feedstock. In this brief overview, the general features of typical AS are reviewed and critically discussed regarding their drawbacks and advantages. Moreover, the challenges faced by novel and more ecological alternatives, in particular lignocellulose-based solutions, are highlighted.

【 授权许可】

Unknown