Rouse 2D diusion of polymer chains in low density precursor lms of polybutadiene melts - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue ACS Macro Letters Année : 2020

Rouse 2D diusion of polymer chains in low density precursor lms of polybutadiene melts

Résumé

We took advantage of pseudo-partial wetting to promote the spreading of precursor lms whose surface density smoothly decays to zero away from a sessile droplet. By following the spreading dynamics of semi-dilute precursor lms of polybutadiene melts on silicon wafers, we measure molecular diusion coecients for dierent molar masses and temperatures. For homopolymers, chains follow a thermally activated 2D Rouse diusion mechanism, with an activation energy revealing polymer segments interactions with the surface. This Rouse model is generalized to chains with specic terminal groups.
Fichier principal
Vignette du fichier
article2_ACSMacroletters_BW2.pdf (1.07 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02571015 , version 1 (12-05-2020)
hal-02571015 , version 2 (27-05-2020)

Identifiants

Citer

Claire Schune, Marc Yonger, Mohamed Hanafi, Jürgen Thiel, Laurent Guy, et al.. Rouse 2D diusion of polymer chains in low density precursor lms of polybutadiene melts. ACS Macro Letters, In press, pp.843-848. ⟨10.1021/acsmacrolett.0c00144⟩. ⟨hal-02571015v1⟩
54 Consultations
135 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More