The first polymer contains a polymer having at least 70% α olefin units and is characterized by a melting temperature lower than the melting temperature of {HEAD ~ the exterior surface portion} of {TAIL ~ the core} 
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The first polymer contains a polymer having at least 70 % α olefin units and is characterized by a melting temperature lower than the melting temperature of { HEAD ~ the exterior surface portion } of { TAIL ~ the core }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL