Polyvinyl formal (PVF) porous material was fabricated by mechanical stirring after adding surfactant in this research

and the acetalation performance and pore structure of PVF influenced by changing degree of HCHO and SDS (sodium dodecyl sulfate) were studied.Furthermore

the mechanism of mechanical properties and absorbency influenced by acetalation performance and pore structure was discussed.The study shows that

the change of acetalation of PVF influences the absorbency

the crosslinking density

the molecular chain gaps

the proportion of hard segment and the VDW (Van der Waals'force) of PVF.Besides

the sudy shows that the change of pore structure alters the amount of capillaries in the PVF

the specific surface area and the water holding capacity

also the relative density and stress concentration.All of these changes influened by acetaltion and pore structure result in the changing of absorbency and mechanical properties of PVF.High performance PVF porous material with good absorbency and mechanical properties can be prepared through controlling the degree of acetalation and pore structure.As a result

the PVF porous material in the hygrometric state can achieve excellent meananical properties and acetalation performance

with the best water absorption rate of 1627%.Meanwhile

the PVF porous material possesses well rebound resilience.