In the present work, caseins and hydrophobins have been successfully
applied for preparing novel green flame retardants for
cotton fabrics. The protein coatings have been proven to be
responsible of a strong sensitization of cotton during its thermal
and thermo-oxidative degradation. At the same time, they have
changed the flammability features of the fabric, favouring the
dehydration of cellulose to form char as opposed to the depolymerization
with further production of combustible volatile species.
As a consequence, an enhanced flame resistance of the treated
fabrics has been achieved, as indicated by the increased total
burning time as well as by the decreased total burning rate. In
addition, a significant residue has been found at the end of the
flammability tests, regardless of the protein type. Finally, the
presence of the protein coating has also modified the resistance to a
heat flow of the fabrics, with a significant reduction of the PHRR of
cotton (27 and 45% for caseins and hydrophobins, respectively).
Therefore, the use of these proteins as an alternative strategy for
the design of sustainable and green flame retardants seems very
promising and worthy of further investigation.
In the present work, caseins and hydrophobins have been successfully
applied for preparing novel green flame retardants for
cotton fabrics. The protein coatings have been proven to be
responsible of a strong sensitization of cotton during its thermal
and thermo-oxidative degradation. At the same time, they have
changed the flammability features of the fabric, favouring the
dehydration of cellulose to form char as opposed to the depolymerization
with further production of combustible volatile species.
As a consequence, an enhanced flame resistance of the treated
fabrics has been achieved, as indicated by the increased total
burning time as well as by the decreased total burning rate. In
addition, a significant residue has been found at the end of the
flammability tests, regardless of the protein type. Finally, the
presence of the protein coating has also modified the resistance to a
heat flow of the fabrics, with a significant reduction of the PHRR of
cotton (27 and 45% for caseins and hydrophobins, respectively).
Therefore, the use of these proteins as an alternative strategy for
the design of sustainable and green flame retardants seems very
promising and worthy of further investigation.
การแปล กรุณารอสักครู่..