PMID- 36419259
OWN - NLM
STAT- MEDLINE
DCOM- 20230314
LR  - 20230314
IS  - 1521-3927 (Electronic)
IS  - 1022-1336 (Linking)
VI  - 44
IP  - 5
DP  - 2023 Mar
TI  - Mechanically Strong and Tough Poly(urea-urethane) Thermosets Capable of Being 
      Degraded under Mild Condition.
PG  - e2200765
LID - 10.1002/marc.202200765 [doi]
AB  - The development of degradable polymeric materials such as degradable polyurethane 
      or polyurea has been much highlighted for resource conservation and environmental 
      protection. Herein, a facile strategy of constructing mechanically strong and 
      tough poly(urea-urethane) (PUU) thermosets that can be degraded under mild 
      conditions by using triple boron-urethane bonds (TBUB) as cross-linkers is 
      demonstrated. By tailoring the molecular weight of the soft segment of the 
      prepolymers, the mechanical performance can be finely controlled. Based on the 
      cross-linking of TBUB units and hydrogen-binding interactions between TBUB 
      linkages, the as-prepared PUU thermosets have excellent mechanical strength of 
       approximately 40.2 MPa and toughness of  approximately 304.9 MJ m(-3) . Typically, the PBUU900 strip can 
      lift a barbell with 60 000 times its own weight, showing excellent load-bearing 
      capacity. Meanwhile, owing to the covalent cross-linking of TBUB units, all the 
      PUU thermosets show initial decomposition temperatures over 290  degrees C, which are 
      comparable to those of the traditional thermosets. Moreover, the TBUB 
      cross-linked PUU thermosets can be easily degraded in a mild acid solution. The 
      small pieces of the PBUU sample can be fully decomposed in 1 m HCl/THF solution 
      for 3.5 h at room temperature.
CI  - (c) 2022 Wiley-VCH GmbH.
FAU - Yin, Yanlong
AU  - Yin Y
AD  - College of Chemistry & Chemical Engineering, Yantai University, Yantai, 264005, 
      China.
FAU - Xu, Yang
AU  - Xu Y
AD  - College of Chemistry & Chemical Engineering, Yantai University, Yantai, 264005, 
      China.
FAU - Zhang, Xuhao
AU  - Zhang X
AD  - College of Chemistry & Chemical Engineering, Yantai University, Yantai, 264005, 
      China.
FAU - Duan, Baorong
AU  - Duan B
AD  - College of Chemistry & Chemical Engineering, Yantai University, Yantai, 264005, 
      China.
FAU - Xin, Zhirong
AU  - Xin Z
AD  - College of Chemistry & Chemical Engineering, Yantai University, Yantai, 264005, 
      China.
FAU - Bao, Chunyang
AU  - Bao C
AUID- ORCID: 0000-0001-7373-1080
AD  - College of Chemistry & Chemical Engineering, Yantai University, Yantai, 264005, 
      China.
LA  - eng
GR  - 22005261/National Natural Science Foundation of China/
GR  - ZR2019MEM008/National Science Foundation of Shandong Province/
PT  - Journal Article
DEP - 20221211
PL  - Germany
TA  - Macromol Rapid Commun
JT  - Macromolecular rapid communications
JID - 9888239
RN  - 8W8T17847W (Urea)
RN  - 0 (Polyurethanes)
SB  - IM
MH  - *Urea/chemistry
MH  - *Polyurethanes/chemistry
OTO - NOTNLM
OT  - degradable polymers
OT  - labile bonds
OT  - polyureas
OT  - polyurethanes
OT  - thermosets
EDAT- 2022/11/25 06:00
MHDA- 2023/03/15 06:00
CRDT- 2022/11/24 00:53
PHST- 2022/11/15 00:00 [revised]
PHST- 2022/09/23 00:00 [received]
PHST- 2022/11/25 06:00 [pubmed]
PHST- 2023/03/15 06:00 [medline]
PHST- 2022/11/24 00:53 [entrez]
AID - 10.1002/marc.202200765 [doi]
PST - ppublish
SO  - Macromol Rapid Commun. 2023 Mar;44(5):e2200765. doi: 10.1002/marc.202200765. Epub 
      2022 Dec 11.