RT info:eu-repo/semantics/article
T1 Cyclic gas dissolution foaming as an approach for simultaneously reducing cell size and relative density in nanocellular PMMA
A1 Martín de León, Judit
A1 Bernardo García, Victoria
A1 Rodríguez Pérez, Miguel Ángel
K1 Plastic foams
K1 Gas
K1 Polymers
K1 Polímeros y polimerización
K1 Gas dissolution foaming
K1 Polimetilmetacrilato (PMMA)
K1 Advanced cellular material
K1 3312 Tecnología de Materiales
AB A new approach to produce nanocellular polymers combining small cell sizes with low relative densities is presented herein. This production method, based on gas dissolution foaming, consists of performing a double saturation and foaming cycle. Thus, nanocellular polymethylmethacrylate (PMMA) has been produced through a first saturation at different saturation conditions (6, 10, and 20 MPa and −32 °C), at constant foaming conditions (60 °C for 1 min). Then, the nanocellular PMMAs obtained from the previous step were again saturated at different saturation conditions, 10 MPa 24 °C, 31 MPa 24 °C, 35 MPa 22 °C, and 6 MPa −15 °C and foamed at different temperatures (40, 80 and 100 °C) for 1 min. This new approach allows the cells created in the first saturation and foaming cycle to further grow in the second cycle. This fact permits producing nanocellular polymethylmethacrylate sheets combining, for the first time in the literature, cell sizes of 24 nm with relative densities of 0.3.
PB MDPI
SN 2073-4360
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/59482
UL https://uvadoc.uva.es/handle/10324/59482
LA eng
NO Polymers, 2021, Vol. 13, Nº. 14, 2383
NO Producción Científica
DS UVaDOC
RD 28-nov-2024