In order to increase mechanical strength, compatibility, and dispersion in PVA, DPL fibers were treated chemically with different chemical (using maleic anhydride, peroxide, permanganate, benzoylation
, alkaline, and acrylic acid) procedures and mechanical strength was tested after every procedure.
Approaches such as mercerisation (alkali treatment), silane treatment, acetylation, benzoylation
, use of maleated coupling agents, peroxide treatment, permanganate treatment, and isocyanate treatment were considered.
Amini, "Commercial zinc oxide (Zn2+) as an efficient and environmentally benign catalyst for homogeneous benzoylation
of hydroxyl functional groups," Chinese Journal of Chemistry, vol.
Meng, "Effect of Si/Al ratio on mesopore formation for zeolite beta via NaOH treatment and the catalytic performance in [alpha]-pinene isomerization and benzoylation
of naphthalene," Microporous and Mesoporous Materials, vol.
Samples were immediately run on HPLC (Shimadzu) after benzoylation
processing to determine benzoyl-polyamine derivatives.
(15) studied the influence of various fiber treatments (benzoylation
, silane, peroxide) and their reinforcing effects on different matrices (LLDPE, HDPE, LLDPE, and HDPE) for compounds prepared by twin-screw extrusion.
Several strategies exist to diminish the hydrophilic nature, among these are the mercerizing, acetylation, benzoylation
and coupling surface treatments of the fiber through silane coupling agents (SCA).
Acetylation and benzoylation
of carbohydrates will convert unprotected and polar sugars into substances soluble in many organic solvents and the resulting sugar peracetates and perbenzoates have been utilized as glycosyl donors in monosaccharide transformations and oligosaccharide syntheses .
After completion of benzoylation
, the reaction mixture was worked-up as usual which afforded a residue.
of the secondary alcohol in 9 was followed by selective removal of the isopropylidene group to give primary alcohol 10.
The free polyamine content of the acid-soluble supernatant fraction was determined, after benzoylation
, by high performance liquid chromatography.