## 4 Conclusions  
The results presented in this study offer a comprehensive understanding of the effects of Vinnex (V) and Joncryl (J) on TPS/PBAT and TPS/PBAT-PBSA formulations. The films exhibited a macroscopically homogeneous appearance without visible phase separation, supported by uniform melt density values across formulations. However, SEM observations revealed a multiphasic morphology at the microscopic level, consistent with the immiscibility of the components. The compatibilizers improved interfacial interactions and phase dispersion, resulting in enhanced film performance. The incorporation of Vinnex and Joncryl caused minimal density changes, improved interfacial interactions, and phase dispersion, resulting in enhanced film performance. TGA results showed that the overall thermal stability remained comparable across formulations, with SEM observations of increased surface roughness also linked to crystallinity development, as described by DSC. Mechanically, the compatibilized blends showed improved performance as follows: (i) generally, roughness can help distribute stress; (ii) Vinnex mainly enhanced stiffness; (iii) Joncryl primarily improved elongation, and (iv) a synergistic effect was observed when both additives were combined, especially in the TPS/PBAT-V/J formulation, with higher hardening tendency during the elastic-to-plastic regime.  
These findings suggest that strategically combining Vinnex and Joncryl is an effective approach for tailoring bioplastic film properties, achieving a balance of rigidity and flexibility suitable for specific applications.  
The following supporting information can be downloaded at: [[https://www.mdpi.com/article/10.3390/app15010456/s1](https://www.mdpi.com/article/10.3390/app15010456/s1)]([https://www.mdpi.com/article/10.3390/app15010456/s1](https://www.mdpi.com/article/10.3390/app15010456/s1)), Figure S1: Representative images of (a) TPS/PBAT; (b) TPS/PBAT-V; (c) TPS/PBAT-J; (d) TPS/PBAT-V/J; (e) TPS/PBAT-PBSA; (f) TPS/PBAT-PBSA-V; (g) TPS/PBAT-PBSA-J and (h) TPS/PBAT-PBSA-V/J.  
Conceptualization, C.M.-P., J.D.B.-V. and J.P.C.-F.; methodology, J.D.B.-V. and J.P.C.-F.; validation, C.M.-P., J.D.B.-V. and J.P.C.-F.; formal analysis, C.M.-P.; investigation, [PERSON]-P.; visualization, [PERSON]-P.; resources, [PERSON]-P.; writing--original draft preparation, [PERSON]-P.; writing--review and editing, C.M.-P., J.D.B.-V. and J.P.C.-F.; supervision, J.D.B.-V. and J.P.C.-F.; project administration, [PERSON]-P.; funding acquisition, C.M.-P. All authors have read and agreed to the published version of the manuscript.  
This research was funded by BZERO.  
The raw data supporting the conclusions of this article will be made available by the authors on request.  
Technological Institute of Plastics (AIMPLAS) and Packaging, Transport & Logistics Research Institute (ITENE) are acknowledged for sample preparation. Central Research Services from Universitat de Valencia (SCIE) are thanked for SEM analysis.  
The authors declare that they have no known competing financial interests or personal relationships that could appear to influence the work reported in this paper. However, [PERSON] is employee of BZERO, which provided funding and technical support for this work.