PMID- 36146017
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220928
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 14
IP  - 18
DP  - 2022 Sep 16
TI  - Oriented Tapes of Incompatible Polymers Using a Novel Multiplication Co-Extrusion 
      Process.
LID - 10.3390/polym14183872 [doi]
LID - 3872
AB  - Continuous tapes of polypropylene (PP) and high-density polyethylene (HDPE) were 
      produced using a novel multiplication co-extrusion process. The structure of the 
      PP/HDPE tapes consists of co-continuous PP and HDPE domains aligned in the 
      extrusion direction, forming a fiber-like composite structure with individual 
      domain thicknesses of 200-500 nm. This unique structure created a significantly 
      large contact interface between the polymer domains. AFM images suggest strong 
      interfacial interactions between incompatible PP and HDPE domains. Orientation at 
      130  degrees C was possible due to the enhanced adhesion arising from epitaxial 
      crystallization and the large interfacial area. The modulus, tensile strength, 
      and orientation factor of the oriented composite tapes increased as the draw 
      ratio increased. The existence of two independent shish kabab-like morphologies 
      in the oriented tapes at different draw ratios was indicated by the appearance of 
      two melting peaks for each material. After one-step orientation at 130  degrees C to a 
      draw ratio of 25, the moduli of the oriented tapes increased to approximately 10 
      GPa, and the tensile strength increased to approximately 540 MPa. These oriented 
      tapes are stiffer and stronger than commercial tapes and do not fibrillate during 
      the orientation process indicating some interfacial interaction between the 
      domains.
FAU - Wang, Xinting
AU  - Wang X
AUID- ORCID: 0000-0001-5656-2668
AD  - Center for Layered Polymeric Systems (CLiPS), Department of Macromolecular 
      Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, 
      USA.
FAU - Price, Erik J
AU  - Price EJ
AD  - Center for Layered Polymeric Systems (CLiPS), Department of Macromolecular 
      Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, 
      USA.
FAU - Wnek, Gary E
AU  - Wnek GE
AUID- ORCID: 0000-0001-7358-8878
AD  - Center for Layered Polymeric Systems (CLiPS), Department of Macromolecular 
      Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, 
      USA.
FAU - Olah, Andrew
AU  - Olah A
AUID- ORCID: 0000-0001-9026-9676
AD  - Center for Layered Polymeric Systems (CLiPS), Department of Macromolecular 
      Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, 
      USA.
FAU - Baer, Eric
AU  - Baer E
AD  - Center for Layered Polymeric Systems (CLiPS), Department of Macromolecular 
      Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, 
      USA.
LA  - eng
GR  - 0423914/National Science Foundation/
GR  - W911NF2020155/United States Army Research Laboratory/
PT  - Journal Article
DEP - 20220916
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC9504517
OTO - NOTNLM
OT  - PP/HDPE blend
OT  - PP/HDPE interface
OT  - mechanical properties
OT  - multiplication co-extrusion
OT  - post-extrusion orientation
COIS- The authors declare no conflict of interest.
EDAT- 2022/09/24 06:00
MHDA- 2022/09/24 06:01
PMCR- 2022/09/16
CRDT- 2022/09/23 01:45
PHST- 2022/07/28 00:00 [received]
PHST- 2022/09/08 00:00 [revised]
PHST- 2022/09/13 00:00 [accepted]
PHST- 2022/09/23 01:45 [entrez]
PHST- 2022/09/24 06:00 [pubmed]
PHST- 2022/09/24 06:01 [medline]
PHST- 2022/09/16 00:00 [pmc-release]
AID - polym14183872 [pii]
AID - polymers-14-03872 [pii]
AID - 10.3390/polym14183872 [doi]
PST - epublish
SO  - Polymers (Basel). 2022 Sep 16;14(18):3872. doi: 10.3390/polym14183872.