PMID- 37631472 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230829 IS - 2073-4360 (Electronic) IS - 2073-4360 (Linking) VI - 15 IP - 16 DP - 2023 Aug 15 TI - Polyisobutylenes with Controlled Molecular Weight and Chain-End Structure: Synthesis and Actual Applications. LID - 10.3390/polym15163415 [doi] LID - 3415 AB - The polymerization of isobutylene allows us to obtain a wide spectrum of polyisobutylenes (PIBs) which differ in their molecular weight characteristics and the chemical structure of chain-end groups. The bulk of the PIBs manufactured worldwide are highly reactive polyisobutylenes (HRPIBs) with -C(Me)=CH(2) end-groups and low-molecular weights (M(n) < 5 kDa). HRPIBs are feedstocks that are in high demand in the manufacturing of additives for fuels and oils, adhesives, detergents, and other fine chemicals. In addition, HRPIBs and CMe(2)Cl-terminated PIBs are intensively studied with the aim of finding biomedical applications and for the purpose of developing new materials. Both chain control (molecular weight and dispersity) and chemoselectivity (formation of exo-olefinic or -CMe(2)Cl groups) should be achieved during polymerization. This review highlights the fundamental issues in the mechanisms of isobutylene polymerization and PIB analysis, examines actual catalytic approaches to PIBs, and describes recent studies on the functionalization and applications of HRPIBs and halogen-terminated PIBs. FAU - Nifant'ev, Ilya E AU - Nifant'ev IE AUID- ORCID: 0000-0001-9151-1890 AD - A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia. FAU - Korchagina, Sofia A AU - Korchagina SA AD - A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia. FAU - Chinova, Maria S AU - Chinova MS AD - A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia. FAU - Tavtorkin, Alexander N AU - Tavtorkin AN AD - A.V. Topchiev Institute of Petrochemical Synthesis RAS, 29 Leninsky Pr., 119991 Moscow, Russia. LA - eng PT - Journal Article PT - Review DEP - 20230815 PL - Switzerland TA - Polymers (Basel) JT - Polymers JID - 101545357 PMC - PMC10460079 OTO - NOTNLM OT - cationic polymerization OT - exo-olefinic group OT - highly reactive polyisobutylene OT - isobutylene OT - polymer functionalization OT - succinic anhydrides OT - succinimides COIS- The authors declare no conflict of interest. EDAT- 2023/08/26 10:44 MHDA- 2023/08/26 10:45 PMCR- 2023/08/15 CRDT- 2023/08/26 01:31 PHST- 2023/07/27 00:00 [received] PHST- 2023/08/05 00:00 [revised] PHST- 2023/08/09 00:00 [accepted] PHST- 2023/08/26 10:45 [medline] PHST- 2023/08/26 10:44 [pubmed] PHST- 2023/08/26 01:31 [entrez] PHST- 2023/08/15 00:00 [pmc-release] AID - polym15163415 [pii] AID - polymers-15-03415 [pii] AID - 10.3390/polym15163415 [doi] PST - epublish SO - Polymers (Basel). 2023 Aug 15;15(16):3415. doi: 10.3390/polym15163415.