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Nowadays customer experience is the most important factor affects the customer loyalty, especially in a mature market. Thus, a Complaint Process Platform (CPP) plays an important role in dealing with customer complaints; most of them are poor mobile coverage, frequent call drops and low speed on 4G. Usually, subscribes call service center directly and report issues to the agent. Many complaints can...
A series of poly(styrene-b-isoprene) block copolymers (PSI) were synthesized by sequential anionic polymerization of styrene and isoprene. Poly(styrene-b-sulfonated isoprene) block copolymers (PSsI) were prepared via reacting the double bonds of the isoprene block with 1,4-dioxane/sulfur trioxide. The spherical-shaped ionic clusters within the PSsI membranes produce a comparable proton conductivity...
A new class of crosslinked proton-conducting membranes (CPMs) with polyoxyalkylene moieties was designed and prepared based on poly(styrene-co-maleic anhydride) modified with 2-aminoethanesulfonic acid sodium salt (AESA-Na) and polyoxyalkylenediamines (PEGDAs). The number density of the pendant of sulfonate group was controlled by the ratio of AESA-Na to PEGDA. The resulted membranes possess good...
A new bulky pendent bis(ether anhydride), 1,1-bis[4-(4-dicarboxyphenoxy)phenyl]-4-tert-butylcyclohexane dianhydride (3), was prepared in three steps starting from nitro-displacement of 1,1-bis(4-hydroxyphenyl)-4-tert-butylcyclohexane with 4-nitrophthalonitrile to form bis(ether dinitrile) (1), followed by alkaline hydrolysis of the bis(ether dinitrile) and subsequent dehydration of the resulting bis(ether...
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