1. Department of Food, Environmental and Nutritional Sciences—Packaging Division, University of Milan, Via Celoria 2, 20133 Milan, Italy
2. Department of Fiber and Polymer
Technology, Royal Institute of Technology, SE-10044, Stockholm, Sweden
3. Department of Materials Science, University of Milano Bicocca, Via Cozzi 53, I-20125
Milan, Italy
4. Interdepartmental Center of Advanced Microscopy, University of Milan,
Via Celoria 26, 20133 Milan, Italy