The primary photochemical processes of lignin-rich high-yield thermomechanical pulp (TMP)
have been investigated with a view to understanding and ultimately preventing the yellowing
(photoreversion) of such paper upon exposure to sunlight. This would enable their use in longer-life paper products and therefore represent large raw material and cost savings to the pulp and paper
A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.
Pulp and Paper Research Institute of Canada (PAPRlCAN).