▁can ▁be ▁used . ▁Sur fact ants ▁such ▁as ▁sod ium ▁d ode cy l ▁sul f ate , ▁T rit on ▁and ▁nan op articles ▁have ▁been ▁used ▁successfully . ▁During ▁the ▁electro sp in ning ▁process ▁the ▁em ulsion ▁dro ple ts ▁within ▁the ▁fluid ▁are ▁stretch ed ▁and ▁gradually ▁conf ined ▁leading ▁to ▁their ▁co ales c ence . ▁If ▁the ▁volume ▁fraction ▁of ▁inner ▁fluid ▁is ▁sufficiently ▁high , ▁a ▁continuous ▁inner ▁core ▁can ▁be ▁formed . ▁ ▁Elect ro sp in ning ▁of ▁bl ends ▁is ▁a ▁variation ▁of ▁this ▁technique ▁which ▁uses ▁the ▁fact ▁that ▁polym ers ▁are ▁generally ▁imm is cible ▁with ▁each ▁and ▁can ▁phase ▁seg reg ate ▁without ▁the ▁use ▁of ▁sur fact ants . ▁This ▁method ▁can ▁be ▁simplified ▁further ▁if ▁a ▁sol vent ▁which ▁dissol ves ▁both ▁polym ers ▁is ▁used . ▁ ▁M elt ▁electro sp in ning ▁ ▁Elect ro sp in ning ▁of ▁polym er ▁mel ts ▁elimin ates ▁the ▁need ▁for ▁vol atile ▁sol vent s ▁in ▁solution ▁electro sp in ning . ▁ ▁Sem i ▁cry st all ine ▁polym er ▁fib ers ▁such ▁as ▁P E , ▁P ET ▁and ▁P P , ▁which ▁would ▁otherwise ▁be ▁impossible ▁or ▁very ▁difficult ▁to ▁create ▁using ▁solution ▁spin ning , ▁can ▁be ▁created . ▁The ▁setup ▁is ▁very ▁similar ▁to ▁that ▁employed ▁in ▁conventional ▁electro sp in ning ▁and ▁includes ▁the ▁use ▁of ▁a ▁s yr inge ▁or ▁sp inner et , ▁a ▁high ▁voltage ▁supply ▁and ▁the