{HEAD ~ Conventional thermal dryers} often damage {TAIL ~ fragile hydrogels} during the cohesive phase, resulting in soluble oligomer formation 
often damage
{ HEAD ~ Conventional thermal dryers } often damage { TAIL ~ fragile hydrogels } during the cohesive phase , resulting in soluble oligomer formation
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH