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Hyperbranched polymers in modifying natural plant fibers and their applications in polymer matrix composites - A review.

Natural plant fibers have been widely used in agricultural and forest industries, and even in automobile industry, especially for producing fiber reinforced polymer matrix composites. However, the low mechanical properties of composites remain the key problem in the applications. Hyperbranched polymer has lots of advantages such as low viscosity and high reactivity, etc. Multi-reactive end groups of hyperbranched polymers are ideal for modifying natural plant fibers to achieve better interface bonding between fiber and resin matrix. This article reviews some research advances in hyperbranched polymer-modified natural plant fibers and summarizes the applications of the modified fibers in polymer matrix composites with particular focus on the chemical modification of fibers and interface bonding.