# 🧪 High-MW linear polymer in water, amplitude sweep (community)

`dataset id: caggioni_linear_polymer_amplitude_sweep`

Strain-amplitude sweep of a high-molecular-weight linear polymer in aqueous solution: 41 points from 1000 down to 0.1 % at fixed angular frequency 1 rad/s, 25 C. G-prime and G-double-prime are strain-independent up to a strain amplitude of about 10-25 %, locating the linear viscoelastic regime; the sweep also feeds the Delaware-Rutgers rule. Parent TRIOS file a_remake_dhr2.json (step 'Amplitude sweep - 1'). Originally measured for the rheofit Carreau walkthrough.

## 📈 Data

![Data for caggioni_linear_polymer_amplitude_sweep](_plots/caggioni_linear_polymer_amplitude_sweep.png)

## 🗂️ Metadata

| Field | Value |
| --- | --- |
| Material | High-molecular-weight linear polymer in water |
| Material kind | polymer solution |
| Source | Unpublished (community contribution) |
| DOI | — |
| Figure | — |
| Measurement type | amplitude_sweep |
| Geometry | not reported |
| Temperature | 25 °C |
| Protocol | Strain amplitude sweep 1000 -> 0.1 % (high to low) at fixed angular frequency 1 rad/s, 41 points. |
| Provenance | community, digitized: no |

## 🧫 Samples

| Sample id | Label |
| --- | --- |
| linear_polymer | High-MW linear polymer, aqueous solution |

## 📋 Data columns

| Role | Column | Units |
| --- | --- | --- |
| `x` | `strain_pct` | % |
| `y` | `Gp_Pa` | Pa |
| `sample` | `sample_id` | — |

## 🏷️ Tags

`polymer solution` `oscillatory` `amplitude-sweep` `delaware-rutgers` `lve`