▁solution ▁containing ▁ ions , ▁as ▁is ▁the ▁case ▁with ▁many ▁bod ily ▁systems , ▁creating ▁electro static ▁rep uls ive ▁forces ▁between ▁the ▁ad hes ive ▁and ▁surface . ▁Ster ic ▁effects ▁can ▁also ▁h inder ▁particle ▁ad s or ption ▁to ▁surfaces . ▁Ent ropy ▁or ▁dis order ▁of ▁a ▁system ▁will ▁decrease ▁as ▁polym er ic ▁mu co ad hes ives ▁ad s orb ▁to ▁surfaces , ▁which ▁makes ▁establish ing ▁contact ▁between ▁the ▁ad hes ive ▁and ▁memb rane ▁more ▁difficult . ▁Ad hes ives ▁with ▁large ▁surface ▁groups ▁will ▁also ▁experience ▁a ▁decrease ▁in ▁entropy ▁as ▁they ▁approach ▁the ▁surface , ▁creating ▁rep ulsion . ▁ ▁W ett ability ▁theory ▁ ▁The ▁initial ▁ad s or ption ▁of ▁the ▁mole c ule ▁ad hes ive ▁will ▁also ▁depend ▁on ▁the ▁wet ting ▁between ▁the ▁ad hes ive ▁and ▁memb rane . ▁This ▁can ▁be ▁described ▁using ▁Young ' s ▁equation : ▁ ▁where ▁ ▁is ▁the ▁inter fa cial ▁t ension ▁between ▁the ▁memb rane ▁and ▁gas ▁or ▁bod ily ▁environment , ▁ ▁is ▁the ▁inter fa cial ▁t ension ▁between ▁the ▁bio ad hes ive ▁and ▁memb rane , ▁ ▁is ▁the ▁inter fa cial ▁t ension ▁between ▁the ▁bio ad hes ive ▁and ▁bod ily ▁environment , ▁and ▁ ▁is ▁the ▁contact ▁angle ▁of ▁the ▁bio ad hes ive ▁on ▁the ▁memb rane . ▁The ▁ideal ▁contact ▁angle ▁is ▁ 0 ° ▁meaning ▁the ▁bio ad hes ive ▁perfectly ▁w ets ▁the ▁memb rane ▁and ▁good