PMID- 33572668
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20210215
IS  - 2073-4360 (Electronic)
IS  - 2073-4360 (Linking)
VI  - 13
IP  - 3
DP  - 2021 Jan 31
TI  - Effect of Molecular Architecture on Associating Behavior of Star-Like Amphiphilic 
      Polymers Consisting of Plural Poly(ethylene oxide) and One Alkyl Chain.
LID - 10.3390/polym13030460 [doi]
LID - 460
AB  - Associating behavior of star-like amphiphilic polymers consisting of two or three 
      poly(ethylene oxide) (PEO) chains and one stearyl chain (C18) was investigated. 
      Although the aggregation number (N(agg)) of linear analogue of amphiphilic 
      polymers monotonically decreased with increasing number-average molecular weight 
      of PEO (M(n)(,PEO)), the N(agg) of micelles of star-like amphiphilic polymers 
      with M(n)(,PEO) = 550 g/mol was smaller than that with M(n)(,PEO) = 750 g/mol, 
      whereas that with M(n)(,PEO) >/= 750 g/mol showed general M(n)(,PEO) dependence. 
      Small-angle X-ray scattering analyses revealed that the occupied area of one PEO 
      chain on the interface between hydrophobic core and corona layer in the micelles 
      of star-like polymers was much narrower than that in the linear amphiphilic 
      polymers. This result indica ted the PEO chains of star-like polymers partially 
      took unfavorable conformation near the core-corona interface in polymer micelles. 
      The effect of local conformation of PEO chains near the interface on the 
      associating behavior became significant as M(n)(,PEO) decreased. Therefore, in 
      polymer micelles of star-like amphiphilic polymers containing PEO with M(n)(,PEO) 
      = 550 g/mol, the enlargement of occupied area of PEO on the core-corona interface 
      should be caused to avoid the formation of unfavorable conformations of partial 
      PEO chains, resulting in a decrease in N(agg)s.
FAU - Kugimoto, Daisuke
AU  - Kugimoto D
AD  - Department of Chemistry and Biochemistry, The University of Kitakyushu, 
      Kitakyushu 8080135, Japan.
FAU - Taniguchi, Aoi
AU  - Taniguchi A
AD  - Department of Chemistry and Biochemistry, The University of Kitakyushu, 
      Kitakyushu 8080135, Japan.
FAU - Kinoshita, Masaki
AU  - Kinoshita M
AD  - Department of Chemistry and Biochemistry, The University of Kitakyushu, 
      Kitakyushu 8080135, Japan.
FAU - Akiba, Isamu
AU  - Akiba I
AD  - Department of Chemistry and Biochemistry, The University of Kitakyushu, 
      Kitakyushu 8080135, Japan.
LA  - eng
PT  - Journal Article
DEP - 20210131
PL  - Switzerland
TA  - Polymers (Basel)
JT  - Polymers
JID - 101545357
PMC - PMC7866995
OTO - NOTNLM
OT  - polymer micelles
OT  - small-angle X-ray scattering
OT  - star-like polymer
COIS- The authors declare no conflict of interest.
EDAT- 2021/02/13 06:00
MHDA- 2021/02/13 06:01
PMCR- 2021/01/31
CRDT- 2021/02/12 01:02
PHST- 2021/01/09 00:00 [received]
PHST- 2021/01/27 00:00 [revised]
PHST- 2021/01/27 00:00 [accepted]
PHST- 2021/02/12 01:02 [entrez]
PHST- 2021/02/13 06:00 [pubmed]
PHST- 2021/02/13 06:01 [medline]
PHST- 2021/01/31 00:00 [pmc-release]
AID - polym13030460 [pii]
AID - polymers-13-00460 [pii]
AID - 10.3390/polym13030460 [doi]
PST - epublish
SO  - Polymers (Basel). 2021 Jan 31;13(3):460. doi: 10.3390/polym13030460.