% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Go:633016,
      author       = {Go, Eun Sul and Hong, Eun Ji and Lee, Ji Yeong and Stolar,
                      Tomislav and Peterson, Gregory I. and Emmerling, Franziska
                      L. and Kim, Kyoungsoo and Kim, Jeung Gon},
      title        = {{I}nsights into {M}echanochemical {S}olid-{S}tate
                      {B}all-{M}illing {R}eaction: {M}onitoring {T}ransition from
                      {H}eterogeneous to {H}omogeneous {C}onditions},
      journal      = {JACS Au},
      volume       = {5},
      number       = {6},
      issn         = {2691-3704},
      address      = {Washington, DC},
      publisher    = {ACS Publications},
      reportid     = {PUBDB-2025-02342},
      pages        = {2720 - 2727},
      year         = {2025},
      abstract     = {As mechanochemical synthesis has advanced significantly,
                      there has been intense interest in understanding the
                      underlying mechanisms of these reactions. Given that many
                      mechanochemical processes are conducted in the solid-state
                      without solvation yet sometimes yield faster reactions than
                      those in solution, we sought to address the following
                      question: Are mechanochemical reactions homo- or
                      heterogeneous? To investigate, we employed a model system
                      involving the mixing and copolymerization of l-lactide (LLA)
                      and d-lactide (DLA), monitored through powder X-ray
                      diffraction (PXRD), nuclear magnetic resonance, and
                      differential scanning calorimetry. In situ and ex situ PXRD
                      analyses of the mixture of LLA and DLA showed that vibratory
                      ball milling rapidly transformed the initially heterogeneous
                      lactide mixture into a homogeneous phase within one min due
                      to collisions between the balls and the jar. By varying the
                      milling conditions, we were able to regulate the level of
                      mixing, which subsequently influenced the copolymerization
                      outcomes. In the solid-state ball-milling copolymerization
                      of LLA and DLA in the presence of a catalyst and initiator,
                      multiblock copolymers of poly(l-lactic acid) and
                      poly(d-lactic acid) were formed within one min during the
                      early stage of the reaction, when incomplete mixing of the
                      monomers led to a process governed by phase heterogeneity.
                      In contrast, prolonged polymerization promoted conditions
                      approaching homogeneity, ultimately yielding atactic
                      poly(lactic acid). This transition from heterogeneous to
                      homogeneous reactions is a distinctive feature compared to
                      conventional homogeneous reactions, potentially leading to
                      mechano-exclusive reaction designs.},
      cin          = {DOOR ; HAS-User},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {6G3 - PETRA III (DESY) (POF4-6G3) / FS-Proposal: I-20231186
                      (I-20231186)},
      pid          = {G:(DE-HGF)POF4-6G3 / G:(DE-H253)I-20231186},
      experiment   = {EXP:(DE-H253)P-P02.1-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1021/jacsau.5c00322},
      url          = {https://bib-pubdb1.desy.de/record/633016},
}