Preparation and Properties of Foamed Cellulose-Polymer Microsphere Hybrid Materials for Sound Absorption
Fan Cheng,
Penbo Lu,
Pengfei Ren,
Jinbo Chen,
Yanghao Ou,
Meiyan Lin,
Detao Liu
Affiliations
Fan Cheng
State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China; China
Penbo Lu
State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China; China
Pengfei Ren
State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China; China
Jinbo Chen
State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China; China
Yanghao Ou
State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China; China
Meiyan Lin
State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China; China
Detao Liu
State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China; China
Sustainability and eco-efficiency are presently directing the development of the next generation of acoustic materials. In this work, foamed cellulose-polymer microsphere (PM) hybrid materials, having sound-absorbing capability, were prepared by incorporating the PMs into cellulose fibers by dehydration and foaming processes. The evolution in morphology of PMs during foaming process was investigated for different heating temperatures. The beating process disintegrated the microscopic cellulose fiber into the smaller fibers, which connected the PMs by a unique fibrous network. The influences of foaming temperature, PM content, and total areal density on the sound absorbing property of composites were studied. The results showed that incorporating the acoustic unit of elastic PMs into the porous cellulose fiber-based network significantly improved the sound absorbing ability of the composites. The sound-absorbing hybrid materials appear to be a promising alternative to non-degradable organic or inorganic acoustic composites, being economical, simple, and eco-friendly.
