Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Degradation modelling short-chain diffusion

Modelling heterogeneous degradation of polymeric devices due to short chain diffusion... [Pg.89]

Diffusion processes are ignored in the model presented in this chapter which could be important. For example, if diffusion of the calcium and phosphate ions in the polymer phase is slow comparing with the polymer scission rate, then the model would over-predict the effect of the TCP phase and hence under-predict the degradation rate. On the other hand, if the short chains can diffuse out of the device quickly such as in a very thin sample, then the TCP phase will be less useful and the model will over-predict the degradation rate of the polymer. It is possible to build these diffusion processes into the model to analyse aU the different possible scenarios. [Pg.86]

See other pages where Degradation modelling short-chain diffusion is mentioned: [Pg.43]    [Pg.89]    [Pg.101]    [Pg.112]    [Pg.399]    [Pg.15]    [Pg.92]    [Pg.224]    [Pg.190]   
See also in sourсe #XX -- [ Pg.435 ]



SEARCH



Chain degradation

Degradation models

Diffusion degradation

Modelling degradation

Short chain

Short chain diffusion

© 2024 chempedia.info