The main aim of this work was the preparation and characterization of the soluble amine end-capped HBPAA and its fully imidized form, hyperbranched polyimide (HBPI), and their use as a multi-functional
crosslinking agent of the linear polyimide MI.
Traditionally, harsh chemical
crosslinking agents have been applied, but chemical cross-linking often compromises biocompatibility of collagen by releasing toxic residuals.
0 3B B B Table 5: Appearance and tackiness of the composite crosslinked films
Crosslinking agent type Appearance Handling Without
crosslinking agent Almost colorless, Very sticky (film of PA) transparent Gelatin (film of PA--G-2) White, translucent Not sticky, smooth Casein (film of PA--C-2) Light yellow, Not sticky, smooth transparent Table 6: Various thermal analysis parameters for substances of Fig.
Subsequently during high temperature curing, a stronger hydrogen bonding system is established along the ether linkages between the cellulose and
crosslinking agent.
After stirring for 30 min, appropriate amount of
crosslinking agent was added.
A novel natural-based superabsorbent composite polymer was prepared by graft copolymerization of acrylic acid onto gelatin backbones in the presence of a
crosslinking agent.
The resulting transparent and homogenous hydrogels do not contain traceable levels of residual
crosslinking agent and can tolerate extrusion through needles of different gauge sizes without significant alteration of their rheological properties.
In this article, PDMS/PVDF composite membranes were prepared by curing PDMS with three kinds of
crosslinking agents.
The aim of the present study is to assess the effect of various
crosslinking agents on the physical properties of acellular swim bladder of fish origin.
At the October meeting of the British Society, Andrew Brown, of Cytec Surface Specialties, presented a talk on a new
crosslinking agent for high durability industrial coatings.
The resol-type phenolic resin-based resin
crosslinking agent is preferably an alkylphenol-formaldehyde resin.
The effect of
crosslinking agent and blowing agent content on the properties of the enhanced PBS foams were investigated in details, such as density, void fraction (YF), average size of the cells, average cell wall thickness, tensile strength, and hardness.
