Effect of radiation grafting of organic monomers on specific gravity and shrinkage of bamboo.
Taken bamboo as raw material,bamboo organic composite materials were obtained through allyl alcohol vacuum impregnation and radiation induced grafting.The specific gravity and shrinkage of materials induced by different processes were measured.With the increasing of impregnation time and radiation dose,the oven-dried radial shrinkage and oven-dried tangential shrinkage of original and carbonized materials all decreased,but they were still higher than that of the control groups;while the specific gravity of the two materials increased significantly.The ANOVA results revealed that only the influence of main factor of the different raw materials on specific gravity was significant;the influence of main factor of the soaking time on oven-dried radial shrinkage was significant;the influence of main factor of the radiation dose on oven-dried radial,longitudinal,tangential shrinkage were significant.The influence of interactive factors of the soaking time and the radiation dose on oven-dried radial shrinkage was significant;the influence of interactive factor of the three factors on oven-dried radial,longitudinal and tangential shrinkage was significant.With the increasing of soaking time,oven-dried longitudinal shrinkage,oven-dried radial shrinkage and oven-dried tangential shrinkage of carbonized material tended to decrease while the specific gravity increased gradually.With the increasing of radiation dose,oven-dried radial shrinkage,oven-dried longitudinal shrinkage and oven-dried tangential shrinkage of carbonized material decreased while the specific gravity increased.