POLYMERS　Vol.70　No.2
>> Japanese
COVER STORY
Moderate Balance of “Precision” in Design of Polymers
Precision polymerization methodologies have challenged ultimate control of narrow distribution and stereoregularity, etc of polymer architectures. On the other hand, “polydisperse” block copolymers with wide distribution breadth and/or sequence gradience are newly designed, which aided in improved processability, superior viscoelasticity, unique phase behavior, and specific functions. Vitrimers also show unique dynamic bond exchange from the pre-designed polymer architectures. Self-assembly （stacking and orientation） of p-conjugated systems is variable with side chain designing. Slight disorders in moss eye structure enrich their performance. In this special issue, we will feature moderate balance of “Precision” on polymer materials design with such hidden ingredients.
Editors: SUGA, UOZU, TAKAGI, and MITOMO

Digest for English Readers
72

Hot Topics in Polymer Science in SPSJ
75
SPSJ PMF Poster Awards 2019

Commentary
Novel Features from Work-sharing Polymers with Diversity Yushu MATSUSHITA
76

COVER STORY: Highlight Reviews
Molecular Weight Distribution and Block Polymer Self-Assembly Nathaniel A. LYND, Mahesh K. MAHANTHAPPA, Atsushi NORO
77
Manipulation of Backbone Orientation in Semiconducting Polymers Itaru OSAKA
80
Development of Superabsorbent Polymers with Moderately Controlled Structures Using Iodine Transfer Polymerization Toru MIYAJIMA
83

PolyMANGA
86

COVER STORY: Topics and Products
Functions of Vitrimers Provided by Cross-Linked Structures with “Associative” Bond-Exchange Mechanism Mikihiro HAYASHI
87
Two-Dimensional Films of Organic Semiconductors Realized Through Layer-Number Controlling Technique Shunto ARAI
89
Surface Structure of Insects: Irregularities and Functions Shinya YOSHIOKA
91

Polymer Science and I: A Personal Account
#I’ll Figure it Out Shotaro HAYASHI
93

Messages: “Work and Life”
Let’s Get on Base with “Hit-by-Pitch”! Tomoko YOSHINO
94

Front-Line Polymer Science
Fine Synthesis and Functionalities of One-dimensional Polymers with Well-defined Threading Structures Hiroshi MASAI, Jun TERAO
95

Messages from SPSJ
100
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