A low-temperature encapsulation of iodine-loaded sorbents (getters) into polymer matrix was developed to address a need for an easily employed, reliable, and on-site production of durable waste forms. This invention is for the process and composition variation for a suit of low-temperature polymer matrices that have a high potential to encapsulate getters into durable waste forms. The method is based on mixing getters with polymer powder which is then followed by a low temperature encapsulation via uniaxial pressing or pressureless sintering at temperatures below 350?. Lab-scale conversion with a hot press produced fully densified products for 'Polymer matrix/Iodine-loaded Ag0-aerogel, 75/25 vol% fraction" with total iodine loadings of 16 mass% in the final waste form.