Passakorn Tesavibul. Development of novel biomedical materials for 3DP machine based on natural polymers . Master's Degree(Biomedical Engineering). Mahidol University. : Mahidol University, 2004.
Development of novel biomedical materials for 3DP machine based on natural polymers
Abstract:
Three Dimensional Printing or 3DP, a rapid prototyping technique that produces
3D physical models from computational 3D images, is used to fabricate an implant
model from individual medical images from a patient. However, general rapid
prototyping materials cannot be implanted directly into the body. Thus, a Rapid
Prototyping model is normally used to generate a set of moulds to cast the implant,
usually made from bone cement or polymethyl methacrylate (PMMA), leading to the
extra cost of silicone mould material and the risk of model damage from unnecessary
material handling and mould imperfection.
This thesis reported the development of suitable material based on a blend of
various natural polymers that are biocompatible for processing in a 3DP machine and
compared the properties of these materials with the original 3DP material. It was
observed that the most suitable formulation consisted 40% starch, 40% dextrin and
20% gelatin. When compared to the original 3DP material which is a plaster based
material, the experimental material has higher shrinkage but lower density and
mechanical properties than the original sample, for both drying and non-drying
samples.